Cis-Dur
"Music Box Dancer" is an instrumental piece by Canadian musician Frank Mills that was an international hit in the late 1970s. It features an arpeggiated piano theme in C-sharp major (enharmonic to D-flat major) designed to resemble a music box, accompanied by other instruments playing a counterpoint melody as well as a wordless chorus. (Most modern piano music sheets have the song in the key of C major.)