page_title: Stradella bass system
hierarchical_section_title: Stradella bass system
caption_attribution_description: English: A photographic preview of a 96-button Stradella bass layout.
context_page_description: The Stradella Bass System is a buttonboard layout equipped on the bass side of many accordions, which uses columns of buttons arranged in a circle of fifths; this places the principal major chords of a key in three adjacent columns.
context_section_description: The Stradella Bass System (sometimes called standard bass) is a buttonboard layout equipped on the bass side of many accordions, which uses columns of buttons arranged in a circle of fifths; this places the principal major chords of a key (I, IV and V) in three adjacent columns.
caption: 96-button Stradella bass layout on an accordion. C is in the middle of the root note row.
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