Harpo rhymes with:
burpo, firpo, acampo, alpo, bacigalupo, bontempo, burpo, cacioppo, campo, cantalupo, capo, cappo, conasupo, contempo, crespo, crispo, cupo, defilippo, delcampo, depo, depot, difilippo, episcopo, expo, filippo, firpo, flippo, gestapo, grippo, grupo, gruppo, hippo, hypo, kimpo, lampo, leppo, lippo, lupo, nappo, o'campo, obispo, ocampo, okpo, piscopo, pupo, repo, restrepo, sanfilippo, stumpo, swapo, tampopo, tipo, typo, zippo
Harpo sounds like:
harb, harff, harp, harpe, harrop, harv, harve, harvey, harvie, herb, herbie, hereby, herve, hervey, horrify, hruby, hurvey