harped

verb
  1. 1

    (usually with on) To repeatedly mention a subject.

    โ€œWhy do you harp on a single small mistake?โ€

  2. 2

    To play on (a harp or similar instrument)

  3. 3

    To play (a tune) on the harp.

  4. 4

    To develop or give expression to by skill and art; to sound forth as from a harp; to hit upon.

Source: https://en.wiktionary.org/wiki/harp, https://en.wiktionary.org/wiki/harped