Does a melodica need to be tuned?
Melodicas are from the free reed family of instruments, which include the harmonica (mouth organ), accordion and concertina. Just like their other family members, melodicas need regular tuning if they are being played a lot. Tuning a melodica is not complicated, but it can be fiddly, and takes some practice.
How hard is it to play melodica?
What's a melodica? It's a small wind instrument (technically a “free-reed”) with keyboard (the piano kind, not the QWERTY kind) on it. It's super easy to play (especially if you ever learned to play piano).