Free basses "quint system" arpeggios

The free bass "quint system", or Galla Rini free bass system, is based on the same logic “quint” scheme of a normal standard bass (“Stradella”) bass mechanic. As normally on a 120 bass, 6 row, bass mechanic you will have the first 4 rows of buttons as chords and the last two rows as fundamental notes, in the extension of an octave. Using the converter the pre-made chords are transformed into bass and conterbass shifted of one octave (instead of major/minor chords) and again bass and conterbass shifted one more octave (sept./dim. chords). For example: starting from C we have: C1/E1 , the first octave (low key), C2/E2, the second octave (chords M/m), C3/E3, (chords 7/dim.) third octave, all in a row diagonally. Moving up or down vertically we have again the same layout of notes a quint up or down. Of course this layout notes develops a logic tonal executive positions because they necessarily create preferential way to switch from one octave to another. In fact the scale’s fingering is different tone by tone. The l60 basses has one octave more low, from C°/ E°. This special layout of notes, not consecutive but for quint, as opposed to the chromathic system, in which the notes are disposed in consecutive order semitonal, creates an enormous ease in the execution of scales, arpeggios and even double notes (thirds and sixths), executions polyphonic share late steps in prohibitive areas for any other type of layout of keyboards. It’s precisely due to the approximation of the...