Eleanor Rigby performed by Göran Söllscher on an 11-string alto guitar | Boing Boing
Amazon.com: Easy Classical Guitar & Alto Recorder Duets: Featuring music of Bach, Mozart, Beethoven, Wagner and others. For Classical Guitar and Alto/Treble Recorder.In Standard Notation and Tablature.: 9781466307872: Marcó, Javier: Books
11 String Alto Guitar: a revelation in guitar-lute repetoire!
Modern Classical Guitar Design Part 8: Fanned Frets — NBN Guitar