There is more than one artist with this name, including:
1) Whitley is Australian singer and songwriter Brian Laurence Greenwood.
2) Whitley was an American acoustic pop band from Wichita, KS, that began in November of 2005 and ended in June of 2006.

1) Whitley is Australian singer and songwriter Brian Laurence Greenwood from Melbourne, Australia.
Whitley is said to blend organic acoustic flavours with electronic overtones creating songs with hushed, whimsical tales of love and loss.