This is covered in the hints, under "The music room". Using rot13 to hide spoilers:
Unir lbh chg gur zhfvp ba gur zhfvp fgnaq?
Vf Ze Pynivpyr'f unaq fgvyy vawherq? Ur pna'g cynl cebcreyl gvyy vg'f svkrq.
Nu, gunax lbh. Pna’g oryvrir V qvqa’g abgvpr n zhfvp fgnaq! Gur tnzr vf njrfbzr, ol gur jnl. Nyy lbhe tnzrf ner.
Thank you!V nqqrq n ovg gb Ze Pynivpyr'f qvnybthr fb gung vs lbh TVIR uvz gur furrg zhfvp ur'yy fhttrfg lbh chg vg ba gur fgnaq (nygubhtu lbh jba'g frr vg hayrff lbh erfgneg lbhe tnzr)
