Here's an achievement alot of people were upset about because you need to have the Rock Band Fender Stratocaster guitar. Not the new one, the old one works fine too. You have to 100% a solo on Expert only tapping on the solo butons, no strumming. A solo is when you are playing lead guitar, and your screen goes blue and a percentage comes up, saying what percent of notes you have hit in that solo. The easiest song I've found is Give it Away by RHCP. The rest of the song is mildly difficult, but the starting solo only has 25 notes, all sustained notes, and only one hammer on. You can also try The Kids in America by The Muffs, very easy solo. Another easy one is Go Your Own Way's first solo. It mostly just has ascending notes, then goes back down. If not, try Today by the Smashing Pumpkins. It's mostly just the blue note then hammer on to orange and back to blue. Just watch the ending and you should be fine. The easiest from Rock band 1 is Wave of Mutilation. -Thanks to FAFUNLEASHED for the vid.