Perfect and endless circles are sheet music. By Early Music Scores and William Lawes
By Chris Kilmore, Austin Post and Alex Katunich, for Bass guitar, Piano and Guitar, style Alternative Pop/Rock, Pop and New Age
By David Paich, Bill Katz and Jussi Kontinen, for Piano, Guitar and Bass, style Pop Rock
By Barbara Anselmi, Alanis Morissette and Ann Harada, for Flute, Cello and Piano, style Classical Pop, Adult Alternative and alternative
By Bill Berry, Michael Stipe and Michael Mills, for Piano and Guitar, style Alternative Pop/Rock, Pop and College Rock
For Violin
By Dan Wattis and Murray Gold, for Piano and Trombone, style Stage & Screen