Songs in the Broadway Singer's Edition include the vocal line and lyrics paired with faithful reductions of the orchestral accompaniments. The songs are presented in their original keys with piano accompaniments carefully crafted for playability. The CD includes performances of these piano accompaniments. The disc works in any CD player and is also enhanced for computer use, allowing adjustment of both tempo and pitch. Includes these hits from Wicked: Dancing Through Life · Defying Gravity · For Good · I Couldn't Be Happier · I'm Not That Girl · No Good Deed · Popular · What Is This Feeling? · The Wizard and I · Wonderful.