"Why" is a dance single by D Mob with Cathy Dennis. It was the fourth single released from Into the Skyline, a full year after the previous single. In the UK, it reached No. 23, making it the most successful single from the album. "Why?" was dedicated in memory of Philip Hall, who died in December 1993. Dennis performed the song on the season 3 episode of Beverly Hills, 90210, "A Night to Remember", in 1993, and appeared alongside Jason Priestley in the closing credits.