Just Give Me a Reason, Pink feat. Nate Ruess Cover We are Backtrack, a new a cappella group from New York City, and "Just Give Me a Reason" is our fourth single! Backtrack is: Soprano: Kara Lewis Alto: Carly Cantor Baritone: Brett Parker Bass: Andrew John Kim Beatboxing: Spencer Beatbox Additional Info: Producer & Recording Engineer: Andrew John Kim Mastering Engineer: Gabriel Gutiérrez at Zampol Productions Mastering Studios