Merge sequential tracks into a single track

It would be interesting to have an option to choose a track and make something like a group to put sequential tracks into a single one starting with the selected one.
Like the Another Brick in The Wall of Pink Floyd.. The 5 first tracks of the album can be joint into one. It can apear on the playlist only with the first track name (In The Flesh?), but when it is choosen to play, the other 4 musics will be played in sequence.