Freddie Mercury

Freddie Mercury, original name Farrokh Bulsara, (born September 5, 1946, Stone Town, Zanzibar inow in Tanzania]—died November 24, 1991, Kensington, London, England), British rock singer and songwriter whose flamboyant showmanship and powerfully agile vocals, most famously for the band Queen, made him one of rock’s most dynamic front men.

https://en.wikipedia.org/wiki/Freddie_Mercury

Tina Turner

Tina Turner (born Anna Mae Bullock; November 26, 1939 – May 24, 2023) was a singer, songwriter and actress. Known as the "Queen of Rock 'n' Roll", she rose to prominence as the lead singer of the husband-wife duo Ike & Tina Turner before launching a successful career as a solo performer. She was noted for her "swagger, sensuality, powerful gravelly vocals and unstoppable energy."A resident of Küsnacht, Switzerland, from 1994 until her death, Turner relinquished her American citizenship after obtaining Swiss citizenship in 2013.

https://en.wikipedia.org/wiki/Tina_Turner

David Bowie

David Robert Jones (8 January 1947 – 10 January 2016), known professionally as David Bowie was an English singer, songwriter, musician, and actor. A leading figure in the music industry, he is regarded as one of the most influential musicians of the 20th century. Bowie was acclaimed by critics and musicians, particularly for his innovative work during the 1970s. His career was marked by reinvention and visual presentation, and his music and stagecraft had a significant impact on popular music.

Amy  Winehouse

Amy Jade Winehouse (14 September 1983 – 23 July 2011) was a British singer and songwriter known for her powerful vocals and an eclectic mix of musical genres that included R&B, soul and jazz.

Her debut album, Frank, was critically acclaimed in the UK and was nominated for the Mercury Prize. The next album, Back to Black, was nominated in as many as six categories of the prestigious Grammy Award, and won 5 of them, tying the record for the most Grammys won by a female singer in one night. On February 14, 2007, she won the BRIT Award for Best British Female Singer and was also nominated for Best British Album. She won the Ivor Novello award three times: the first in 2004 for the song Stronger Than Me, the second in 2007 for the song Rehab, and the third in 2008 for the song Love is a Losing Game.
 

George Michael 

George Michael (born Georgios Kyriacos Panayiotou; 25 June 1963 – 25 December 2016) was an English singer-songwriter and record producer. He is one of the best-selling musicians of all time, with his sales estimated at between 100 million and 125 million records worldwide.A prominent figure in popular music, Michael was known as a creative force in songwriting,vocal performance, and visual presentation. He achieved 13 number-one songs on the UK Singles Chart and 10 number-one songs on the US Billboard Hot 100. Michael won numerous music awards, including two Grammy Awards, three Brit Awards, twelve Billboard Music Awards, and four MTV Video Music Awards. He was listed among Billboard's the "Greatest Hot 100 Artists of All Time" and Rolling Stone′s the “200 Greatest Singers of All Time”.The Radio Academy named him the most played artist on British radio during the period 1984–2004. Michael was inducted into the Rock and Roll Hall of Fame in 2023.

Whitney Houston

Whitney Elizabeth Houston (August 9, 1963 – February 11, 2012) was an American singer and actress. Nicknamed "the Voice", she is one of the best-selling music artists of all time, with over 220 million records sold worldwide. In 2023, Rolling Stone named her the second-greatest singer of all time. Houston influenced many singers in popular music, and was known for her powerful, soulful vocals, vocal improvisation skills, and use of gospel singing techniques in pop music. She had 11 number-one singles on the Billboard Hot 100 and is the only artist to have seven consecutive number-one singles on the chart.Her accolades include eight Grammy Awards, 16 Billboard Music Awards, two Emmy Awards, and 28 Guinness World Records. Houston's inductions include the Grammy Hall of Fame (twice), the Rock and Roll Hall of Fame, the Rhythm and Blues Music Hall of Fame, the Georgia Music Hall of Fame, the New Jersey Hall of Fame, and the National Recording Registry at the Library of Congress.

Michael Jackson 

Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American singer, songwriter, dancer, and philanthropist. Known as the "King of Pop", he is regarded as one of the most significant cultural figures of the 20th century. During his four-decade career, his contributions to music, dance, and fashion, along with his publicized personal life, made him a global figure in popular culture. Jackson influenced artists across many music genres. Through stage and video performances, he popularized complicated street dance moves such as the moonwalk, which he named, as well as the robot.

Elvis Presley

Elvis Aaron Presley (January 8, 1935 – August 16, 1977), more commonly referred to as Elvis, was an American singer and actor. Known as the "King of Rock and Roll", he is regarded as one of the most significant cultural figures of the 20th century. Presley's energized interpretations of songs and sexually provocative performance style, combined with a singularly potent mix of influences across color lines during a transformative era in race relations, brought both great success and initial controversy.

John Lennon

John Winston Ono Lennon(born John Winston Lennon; 9 October 1940 – 8 December 1980) was an English singer, songwriter, musician and peace activist who gained worldwide fame as the founder, co-songwriter, co-lead vocalist and rhythm guitarist of the Beatles. Lennon's work included music, writing, drawings, and film. His songwriting partnership with Paul McCartney remains the most successful in history.

Janis Joplin

Janis Lyn Joplin (January 19, 1943 – October 4, 1970) was an American singer and songwriter. One of the most successful and widely known rock performers of her era, she was noted for her powerful mezzo-soprano vocals and "electric" stage presence.

https://en.wikipedia.org/wiki/Janis_Joplin

Prince

Prince Rogers Nelson (June 7, 1958 – April 21, 2016) was an American singer, songwriter, musician, record producer, and actor.

The recipient of numerous awards and nominations, he is widely regarded as one of the greatest musicians of his generation. He was known for his flamboyant, androgynous persona; his wide vocal range, which included a far-reaching falsetto and high-pitched screams; and his skill as a multi-instrumentalist, often preferring to play all or most of the instruments on his recordings.His music incorporated a wide variety of styles, including funk, R&B, rock, new wave, soul, synth-pop, pop, jazz, blues, and hip hop. Prince produced his albums himself, pioneering the Minneapolis sound.

I think that there are many to name here, for me the first one that comes to mind:

John Wetton (lead singer Asia).

Jim Morrison

James Douglas Morrison (December 8, 1943 – July 3, 1971) was an American singer-songwriter and poet who was the lead vocalist of the rock band the Doors.

Due to his energetic persona, poetic lyrics, distinctive voice, unpredictable and erratic performances, along with the dramatic circumstances surrounding his life and early death, Morrison is regarded by music critics and fans as one of the most influential frontmen in rock history. Since his death, his fame has endured as one of popular culture's top rebellious and oft-displayed icons, representing the generation gap and youth counterculture.

Oh and don’t forget Gary Moore!

A brilliant blues and rock guitarist and successful singer-songwriter, Gary Moore has nevertheless always been rather underrated, especially in the United States, where he was never a major artist and rarely gets ranked highly in the usual "best guitarist" lists. He was born and raised in Belfast and played in the line-ups of several local bands during his teenage years, before moving to Dublin, Ireland, after being asked to join Skid Row. Moore later played with Phil Lynott in Thin Lizzy and joined the British jazz-rock band Colosseum II. He also had a successful solo career with eleven UK Top 40 single releases, which included the top ten songs "Parisienne Walkways" and "Out in the Fields" (a collaboration with Lynott), and he peaked in popularity with his best-selling album "Still Got the Blues" in 1990, which was on the UK album chart for 26 weeks.

Moore tragically died aged just 58 in 2011. He was never one of the biggest rock stars in the world but he was revered by many British and Irish guitarists and guitar fans, frequently written about in the British guitar press and magazines such as Classic Rock, and left a tremendous legacy of music ranging from blues to hard rock to ballads.

Of course @awesomemac Garry Moore and 
his best song Still Got the Blues 

@Nina Nebo I liked Gary Moore even before this song, but this song is really one of his best songs. His guitar sounds so good!

Kurt Cobain 

Kurt Donald Cobain (February 20, 1967 – c. April 5, 1994) was an American musician who was the co-founder, lead vocalist, guitarist and primary songwriter of the rock band Nirvana. Through his angst-fueled songwriting and anti-establishment persona, Cobain's compositions widened the thematic conventions of mainstream rock. He was heralded as a spokesman of Generation X and is highly recognized as one of the most influential alternative rock musicians.

Jimi Hendrix

James Marshall "Jimi" Hendrix (born Johnny Allen Hendrix; November 27, 1942 – September 18, 1970) was an American guitarist, songwriter and singer. Although his mainstream career spanned only four years, he is widely regarded as the greatest and one of the most influential electric guitarists in the history of popular music, and one of the most celebrated musicians of the 20th century. The Rock and Roll Hall of Fame describes him as "arguably the greatest instrumentalist in the history of rock music."

Aretha Franklin 

Aretha Louise Franklin ( March 25, 1942 – August 16, 2018) was an American singer, songwriter and pianist.Referred to as the "Queen of Soul", Rolling Stone twice named her as the greatest singer of all time.With global sales of over 75 million records, Franklin is one of the world's best-selling music artists.

Shane MacGowan

Shane Patrick Lysaght MacGowan (25 December 1957 – 29 November 2023) was an Irish musician who was best known as the lead vocalist and songwriter of Celtic punk band the Pogues. Many of his songs were influenced by Irish nationalism, Irish history, the experiences of the Irish diaspora (particularly in England and the United States), and London life in general.He often cited the 19th-century Irish poet James Clarence Mangan and playwright Brendan Behan as influences.

Lemmy !

Meat Loaf

Michael Lee Aday ( September 27, 1947 – January 20, 2022), known professionally as Meat Loaf, was an American singer and actor known for his powerful, wide-ranging voice and theatrical live shows. He is one of the best selling music artists in history. His Bat Out of Hell trilogy—Bat Out of Hell (1977), Bat Out of Hell II: Back into Hell (1993), and Bat Out of Hell III: The Monster Is Loose (2006)—has sold more than 100 million records worldwide. The first album stayed on the charts for over nine years, as of 2016 still sold an estimated 200,000 copies annually, and is on the list of bestselling albums.

Tony Clarkin

1946-2024

Magnum are an English progressive rock, melodic hard rock and AOR band. They were formed in Birmingham in 1972 by Tony Clarkin (guitar, songwriter) and Bob Catley (vocals) in order to appear as the resident band at the Rum Runner nightclub in the city. Magnum have undergone several changes in personnel over the years; however, the core of Catley and Clarkin remained until Clarkin's death in 2024.

Source: Wiki

Tony died 5 days before the release of their latest album. 

 R.I.P Whitney Houston

 February 11th 2012  Whitney Houston was found dead in suite 434 at the Beverly Hilton Hotel .

She influenced many singers and was known for her powerful, soulful vocals, vocal improvisation skills, use of gospel singing techniques in pop music, and live performances. Houston had 11 No.1 singles on the Billboard Hot 100 and is the only artist to have seven consecutive No.1 singles on the chart.

Nat King Cole

Nathaniel Adams Coles (March 17, 1919 – February 15, 1965), known professionally by his stage name Nat King Cole, was an American singer, jazz pianist, and actor. Cole's career as a jazz and pop vocalist started in the late 1930s and spanned almost three decades where he found success and recorded over 100 songs that became hits on the pop charts.

Some of his most notable singles include "Unforgettable", "Smile", "L-O-V-E", "When I Fall in Love", "Let There Be Love", "Mona Lisa", "Autumn Leaves", "Stardust", "Straighten Up and Fly Right", "The Very Thought of You", "For Sentimental Reasons", "Embraceable You" and "Almost Like Being in Love".

He received numerous accolades including a star on the Hollywood Walk of Fame (1960) and a Special Achievement Golden Globe Award.Posthumously, Cole has received the Grammy Lifetime Achievement Award (1990), along with the Sammy Cahn Lifetime Achievement Award (1992) and has been inducted into the Rock and Roll Hall of Fame (2000), and the National Rhythm & Blues Hall of Fame (2020).

He was the father of singer Natalie Cole (1950–2015), who covered her father's songs in the 1991 album Unforgettable... with Love.