Based on (PD) File:Bass clef with note.svg English author name string: Just plain Bill Wikimedia username: Just plain Bill determination method or standard:...
Based on (PD) File:Bass clef with note.svg English author name string: Just plain Bill Wikimedia username: Just plain Bill...
based on (PD) File:Bass clef with note.svg English Wikimedia username: Just plain Bill URL: https://commons.wikimedia.org/wiki/user:Just_plain_Bill author...
60417 - Ref-No 5038.svg Deutsch: Symbol 5038 aus IEC 60417 - Titel/Bedeutung: Tieftonregler English: Symbol 5038 from IEC 60417 - Title/Meaning: Bass control...
