Plumb is actually the moniker of Tiffany Arbuckle Lee who originally started off as a contemporary Christian artist but has since dabbled in other musical areas as well.
I had never heard of her until recently but it turns out that aside from being a recording artist on her own, she's also written songs for Michelle Branch, Kimberley Locke and Mandy Moore. Amy Lee of Evanescence has even said that Plumb has been an inspiration to her.
In October of this year she released her 5th studio CD entitled "Blink" which is where this song, "In My Arms" is from.
Our UK friends Bimbo Jones (who are on FIRE lately) took this angelic vocal and brought it up to the next level, delivering a dance floor thumper worthy of peak hour play.
Plumb - In My Arms (JM's Bimbo Jones Radio Edit)