One can sing a cânta (same conjugation as a mânca, or one can sing an instrument…

Eu cânt la pian
I play piano

And using the subjunctive

Eu știu să cânt la pian
I play piano

Instruments

Romanian English
pian piano
chitară guitar
vioură violin
tobă/tobe drum(s)
acordeon accordion
fluier fluit
nai pan-fluit
N-am (Nu am) nai.
I don't have a pan-fluit.
N-ai (Nu ai) nai.
You don't have a pan-fluit.