Term used of str. instrs., particularly lute family, guitar, etc., meaning a group of strs. tuned in unison or in the octave and plucked simultaneously so as to give extra loudness. In 16th cent., lutes had double‐courses on lower strs. The single str. g″ is called a course, thus lutes had 11 strs. in 6 courses. Bass‐course is single or double str. running alongside fingerboard without crossing the frets and does not vary in pitch.