| Artist |
| Song title |
Year |
Genre |
Difficulty |
MSP |
| Oceano |
| District of Misery |
2009 |
Metal |
 |
160 |
| Octavio Suñé |
| Caíamos |
2010 |
Pop/Rock |
 |
80 |
| Esto ya lo Toqué Mañana |
2010 |
|
|
80 |
| Of Last Resort |
| Fade Away |
2009 |
Rock |
 |
160 |
| Of Mice & Men |
| Second & Sebring |
2010 |
Metal |
 |
160 |
| Those in Glass Houses |
2010 |
|
|
160 |
| of Montreal |
| An Eluardian Instance |
2008 |
Indie Rock |
|
160 |
| Heimdalsgate Like a Promethean Curse |
2007 |
Indie Rock |
 |
160 |
| Oh Darling |
| YOUNG LOVE |
2011 |
Pop/Rock |
 |
160 |
| Oh My! |
| Twenty One |
2011 |
Indie Rock |
|
80 |
| OK Go |
| White Knuckles |
2010 |
Alternative |
|
160 |
| White Knuckles - The Big Robot Remix |
2010 |
Other |
|
160 |
| Oliver Pride |
| Nothing There |
2009 |
Rock |
|
80 |
| One Day |
| Give |
2011 |
Alternative |
|
160 |
| One Year Later |
| Absolution |
2012 |
Metal |
|
160 |
| Absolution (2x Bass Pedal) |
2012 |
|
|
160 |
| Shapeshifter |
2012 |
|
|
160 |
| Shapeshifter (2x Bass Pedal) |
2012 |
|
|
160 |
| Orange Avenue |
| Just Refrain |
2009 |
Pop/Rock |
|
160 |
| Order of the Crimson Wizard |
| Scream Ceremony |
2009 |
Rock |
|
80 |
| Order of Voices |
| Reaching Down |
2010 |
Progressive |
|
80 |
| Otep |
| Fists Fall |
2011 |
Metal |
|
160 |
| Smash the Control Machine |
2009 |
|
|
160 |
| OWL |
| Charmed |
2009 |
Rock |
|
80 |
| Violent Center |
2009 |
|
|
80 |
