Quenya 

tanta-

verb. to play a harp

Derivations

tanta

harp

tanta (1) noun "harp", also as verb tanta- "to play a harp" (VT41:10)

tantila

harp

tantila noun "harp" (VT41:10)

nandë

harp

nandë (2) ("ñ")noun "harp" (ÑGAN/ÑGÁNAD; according to VT46:3, Tolkien changed the final vowel from -a to -ë)