I just got this achievement and I think I might've figured out a way around the supposed glitch. Now for starters I followed the self-boosting strategy that's described in SCG Rebmob's solution. (Supply many Thumb's Up to him) You can pull up your player stats between matches by hitting the Yellow Key and the very last thing listed is your Verses Matches, now keep an eye on this number. I started at 66, play a match or 2 and see if the number climbs. If not then back out, or try a different game mode for a song and re-enter and try a song again in Pro Face-Off until this ticker begins moving. It may take it a few tries before it starts counting, but once it starts it'll count every song you play, even if you happen to end up in a match with another actual player, if you both select a song, it'll count each one as long as one of you doesn't quit. Now I got the achievement on my 91st Verses song. (91-66=25) SO, what'd I do? Once I started trying to achieve this, I never turned the game off. The key word that is left out of this achievement is "consecutive." If you get out of the game, as in go to the xbox dashboard, or begin another game, like...Hannah Montana: The Movie (or whatever you may have laying around) and come back you will have to play another 25 consecutive songs. Now, if you follow the "Alternative Method" on the forementioned solution, you will have to quit out after each match you do, which is fine, it counts the songs, I did it and got the achievement. So keep an eye on the counter, and just do 25 songs consecutively, you may even be able to deviate and enter other game modes and come back, as long as you don't leave the game all together.