The Crew-Cuts a group called "The Jordonaires" (not to be confused with a similarly named group, The Jordanaires, that was known for singing backup vocals on Elvis Presley's hits) and also "The Otnorots" ("Toronto" spelled backwards being "Otnorot"), but they split from the group to finish high school. When the Four Lads returned to Toronto for a homecoming concert, John Perkins and Maugeri ran into each other and decided that they could themselves have a musical future. They joined with Barrett and Ray Perkins in March 1952. The group was originally called "The Four Tones" (not to be confused with The Four
Backing track string sections which would be costly to reproduce live.) A singer or vocal group performing without a backup band may sing along to pre-recorded music. A music track without lead vocals may also be called a karaoke, minus-one track or playback. Music backing tracks are also available for instrumental practice and jamming by jazz musicians, to help beginning to intermediate performers play to a song's rhythm part or learn to improvise over chord progressions. Backing tracks are also known as jam tracks. If bought commercially, backing tracks often use session musicians to play the instruments and backing vocals, rather than