What Ifs sheet music. Arrangement for Piano and Guitar. By Steve Kipner, Matthew John McGinn, Kane Brown and Andrew Frampton
By Steve Vai and René Keller, for Synthesizer, Guitar and Bass guitar, style Pop Rock and Rock
By Colbie Caillat, Ian Broudie and Andrew Jacob Pruis, for Clarinet, Violin and Piano, style Rhythm & Blues, Rock and Brit-Pop
By Kwok Man Ho Marco, for Viola, Piano and Saxophone, style Pop, New Age and Soul
By Vladimir Morozov
By Mark Phillips, for Guitar
By Ed Hill, Dave Grohl and Chris Shiflett, for Guitar and Piano, style Pop, Country and Folk