sentences:  CKMP also introduced hourly "First Play" tracks, which present new songs popular in other countries and among social media users.Steve Jones, Newcap Radio's vice president of programming, explained that the format was designed to suit modern listening habits; research concluded that the convention of three to four-and-a-half minute radio edits (a concept which dates back to the 1950s and the need to fit singles on 45 rpm records) was dated, as listeners would use their portable music players to skip through and only listen to portions of songs—developing a short attention span to music.He also noted that with the ability to hear at least six to eight songs in a fifteen-minute span, listeners would feel a better "sense of momentum and energy" with the new format.