For me to say, everything in its own way are difficult to play :P But for me i dont mean any classical, vivaldi etc because they're are pain in my ass. (sorry for "bad" word). I myself like metal music very much, so i think the song at the moment would be Wintersun's Beyond the Dark sun. And why is that? Because of the friggin' speed of it, hah. And i'm only playing the Rhythm part of it :angry: So if there's anybody willing to join the conversation :rolleyes: I checked the forum for similiar topics like this, but I didn't notice one like this. So Moderator/Admin can remove, lock or whatever if there's been discussions about this. And sorry 'bout my english, it's not the best there is, but I hope that you can understand! Cheers!