boom-chick chords

boom-chick chords (also known as oom-pah chords): A single downbeat tone followed by a higher chord on the offbeat, a pattern which continues through chord changes.  It’s commonly heard in bluegrass music and is easily played on piano and guitar, as well as dulcimer and autoharp.  See The Hammered Dulcimer A-Chording to Lucille Reilly, pp. 65-81.