Originalno: Bifocal Rag for two guitars. youtube. David Warin Solomons. Classical Guitar sheet music. Advanced. 1953-. For Guitar, Guitar duo.
Prevod: Bifocal Rag za dve kitari. David Warin Salamoni. Klasična kitara note. Napredno. 1953 -. Za kitaro, kitarski duo. 20th Century, Ragtime.