The context of the following conversation is Alex loved all instruments but in particular, she was happiest when she tickled the ivories.:
Alex says I love piano so much! I like all instruments, but there's nothing like tickling the ivories!.
The friend responds It is beautiful. Especially when it's played with passion, like you do..
Alex responds I can't help it. I The music just calls to me. If I don't answer, I'll explode!.
The friend responds You're a true musician I guess..