Treble Registers of the Accordion

 

Bassoon accordion symbol
 Bassoon - Low Reed - (L)
Clarinet accordion symbol
 Clarinet - Middle Reed (M)
Piccolo - High Reed (H)
Bandoneon accordion symbol
 Bandoneon - High and Middle Reeds (LM)
Violin accordion symbol
 Violin - Two Middle Reeds (MM)
Oboe accordion symbol
 Oboe - Middle and High Reeds (MH)
Organ accordion symbol
 Organ - Low and High Reeds (LH)
Harmonium accordion symbol
 Harmonium - Low, Middle and High Reeds (LMH)
Accordion accordion symbol
 Accordion - Low, Two Middle Reeds (LMM)
Simulated Musette accordion symbol
 Simulated Musette - Two Middle and High Reeds (MMH)
True Musette accordion symbol
 True Musette - Three Middle Reeds (MMM)
Master with Musette accordions symbol
 Master with Musette - Low and Three Middle Reeds (LMMM)
Master with Piccolo accordion symbol
 Master with Piccolo - Low, Two Middles and High Reeds (LMMH)

 

The symbols are arranged as if they are being viewed from behind the keyboard. The treble register/switch with the most amount of dots is called the Master. This will represent the total amount of reeds available on that accordion. For example, an accordion that has a Master switch with 3 dots will be regarded as a 3 reed accordion. Note that some older accordions employed different register names or in rare cases they used the wrong symbol.