Qwerty's Bosses and Items adds new music to Terraria. The soundtrack has been composed by Turquoise.
Music
Arctic Annihilation
Arctic Annihilation is the track that plays during fights against Polar Exterminator, and was composed by musicman/forty big legs.
Heavenly Fortress
Heavenly Fortress is the track that plays while the player is in the Sky Fortress.
Higher Being
Higher Being is the track that plays during fights against The Divine Light.
Built to Destroy
Built to Destroy is the track that plays during fights against Ancient Machine.
The God's Bleed
The God's Bleed is the track that plays during fights against Noehtnap.
Beast of Three Heads
Beast of Three Heads is the track that plays during fights against The Hydra.
Old Dinos, New Guns
Old Dinos, New Guns is the track that plays during fights against Dino Militia.
Blade of a God
Blade of a God is the track that plays during fights against Imperious.
The Conjurer
The Conjurer is the track that plays during fights against Rune Ghost.
Energised Planetary Incineration Climax (E.P.I.C.)
Energised Planetary Incineration Climax (E.P.I.C.) is the track that plays during fights against the Oversized Laser-emitting Obliteration Radiation-emitting Destroyer