Monstrous Opus music plays incorrectly if the player dies in the 2nd phase

Steps to reproduce:

• Go to the Monstrous Opus fight, either original or respawned.

• Survive until it switches to its 2nd phase.

• Let yourself get obliterated and respawn.

• Use the teleport statue to return.

The music of phase 1 will not play as expected. Instead, the siren sounds of phase 2 will play. The music does not return to normal until it switches from its 2nd phase to its 1st phase again.