Soulful melody

I heard a fabulous rhythm that was so unclear
A sweet melody that hold back my fears
An angelic voice that wipe away my tears

Love leads me to a heaven I've never been before
The labyrinth that I'm afraid to explore
Tries to open and relieve the saddest core

Avert every single breathe that I have
The lullaby that swing my qualm soul
The sweet cradle that touches my heart

But a sudden change in notes
A pitch that changes every single thing
Rave and ruin the mesmerizing feeling

My alluring melody turns to anxious song...
The sweet serene, I thought would endure
But turn to broken love song I can't sing all my life