It's called "Don't Stop Believin'" by Journey. Although in the commercial it's vocal version by the Glee cast. you can also get it on iTunes.
Mercy by Duffy.
song is wave by beck
The song and singer is: SONG-Fingerprints SINGER-Katy Perry
The song is "I Look Good" by Triniti.
loser like me is their 1st original song by the new directions on glee
Skylar Grey.
Australian Band "Borne" Song Title- The Guide www.myspace.com/borneaustralia
Harden My Heart by Quarterflash
The song is "All Will Be Well" by the Gabe Dixon Band. They are featured in a video/trailer for the new show on the NBC website.
Her name is Heather Morris and she plays Brittany on Glee.
The song is called "Bang Bang" by Melanie Fiona
In America it is on FOX on Wednesday nights.