What Could Have Been sheet music. Arrangement for Piano and Guitar. By Jason Nicholas Walsh, Christian Linke, Michael James Pitman and Alexander Seaver
By Adam Slack, Joshua Wilkinson and Brandy Kay Riha, for Piano and Guitar, style Stage & Screen, Pop Rock and Musical
By Bryan White, Don Cook and John Jarvis, for Piano and Guitar, style Contemporary Country, Country and Pop
By L A Morgan, for Piano and Guitar, style Broadway and Stage & Screen
By David Foster, Carole Bayer Sager and Carole King, for Piano, Electric guitar and Guitar, style Adult Contemporary, Piano Rock and Soft Rock
By Porter Howell, Mike Stern and Brady Seals, for Guitar, Piano and Electric guitar, style Country, Jazz and Blues
By Geoff Szabo, for Piano, style Gospel and Pop