My grandfather gave me an accordion and it has 60 basses (5x12), which I find for a bit unusual.

I cannot find the chart for such accordion. Anyone knows what kind of accordion is this and where I can find the basses chart?


60 basses is bog standard for small accordions. The central diagonal around the specially marked C bass has notes E-C-c-cm-c7 (upper case letters are single notes, here bass notes, lower case are chords). c is C-E-G (inversion is determined by where the chord octave is), cm is C-E♭-G, c7 is what is actually called gdim on a six-row bass, namely E-G-B♭ (for most music using alternating basses you would not notice the difference to the six-row c7, namely C-E-B♭).

Going upwards is "adding sharps", C-G-D-A-E-B-F♯-C♯, going downwards is "adding flats", C-F-B♭-E♭-A♭-D♭. It's not precicely defined which 12 notes are available in the central role (well, all of them when ignoring enharmonics, but an enharmonic switch requires a jump across 12 diagonals).

  • Be interested to hear if there's a pitch difference between Db and C#!
    – Tim
    Oct 24 '19 at 15:25
  • There's no difference. In accordions with more than 12 rows, the bass buttons repeat to make fingering easier, but they play the same notes. Oct 25 '19 at 1:40

I know almost nothing about accordions, but I did find a fingering chart that includes 60 bass.

source: pitorchestraexperience.wordpress.com

There seem to be many models that have 60 bass keys so you need to give more information for that part of the question.

  • okay, but why the bigger part of the buttons are empty and do not show the chord?
    – Edenia
    Oct 24 '19 at 15:58
  • you can extrapolate what goes in the circles because its a pattern
    – Legorhin
    Oct 24 '19 at 16:02
  • Another helpful way to identify your keyboard is by a search on "accordion key chart", then selecting the "more images" link. To specifically identify your instrument, go to accordionists.info and post a question. You will probably get more help than you need. Oct 24 '19 at 18:58

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