There are multiple artists with this name
1. An American pop band active in the 1970's
2. An alternative rock solo musician
3. A hard rock band from Australia
4. An electronica musician

1. Looking Glass was an American pop music group of the early 1970s that was part of the Jersey Shore sound. They are best remembered for their million selling 1972 song, "Brandy (You're a Fine Girl)".

The group was formed in 1969, at Rutgers University in New Brunswick, New Jersey, and consisted of four members: Elliot Lurie (lead guitar and vocals), Lawrence Gonsky (piano), Pieter Sweval (bass), Jeff Grob (drums).

2. The name used by Jim Wallis of My Sad Captains for his alt-indie solo work.
http://www.myspace.com/lookingglasshq

3. Looking Glass is also an exceptional three-piece hard rock band from Canberra, Australia, who deliver a crushing brand of high-volume noise in the vein of Hawkwind, Cactus and Black Sabbath.
https://lookingglass.bandcamp.com

4. Electronica side project of Gareth Hughes from Bristol band, Maps and Legends. (www.soundcloud.com/looking-glass) Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.