LULLABIES FOR SLEEPY BIRDS

APOCALYPSE by Cigarettes After Sex

I'm quite smitten with this band.  It's spacey and ethereal, which is how I prefer my bedtime music.  But I'm also completely besotted with the singer's voice.  I can hear her smiling when she sings "your lips my lips; apocalypse..." 

She gives me butterflies whenever she sings that line.  Is that normal?