1. of, relating to, or serving as an accompaniment; providing musical or other support to a main element
Usage: formal; chiefly musical context

Examples

• The piano played an accompanimental role in the chamber ensemble.
• The string section provided accompanimental harmony to the soprano's melody.
• Accompanimental chords supported the lead vocalist throughout the performance.
• The guitarist's accompanimental patterns complemented the singer's phrasing.
• In baroque music, the continuo served an accompanimental function.