Last friday I jammed with a hip hop group (a couple MC's, a drummer, a guitarist, and myself). It went well and now I've been invited to come back. The guitarist is 18 and has only been playing for like 8 months and he's really already quite good as far as playing licks and things. However, he's really into metal, and most of his riffs sounded like they came straight out of a Metallica song. Don't get me wrong, I love metal, but clearly not the right gig. There were times where he'd take a break, and me and the drummer would get a great beat going and the MC's would go nuts and spit some awesome stuff on it, and then the guitarist would come back and play something that not only didn't fit the mood, but was not in the same key at all, and mostly not in time with what we were doing. In that case, I transposed the bassline I was doing a whole tone up to match the riff he was doing better harmonically, and I had to change up my rhythm to match his, and even then I would make sure to play the root loudly on every fourth downbeat to signal to change to the next chord, and he would usually be off, sometimes as far as two beats after the fact. With this going on, it didn't take long for the MC's to lose their inspiration. He's a great guy and I like him, but I'd just like it if he used his ear a bit more to know what chords to play, chose riffs that fit with what we were already doing (not ones he already knew and trying to force them in), and work on his timing to change chords at the right time. Especially because so far we're only jamming/coming up with new stuff and not working on covers or anything like that, there's really nothing specific for all of us to practice in the off-time. So, I'm looking for suggestions in what I could do to help him out. I also feel like a d*ck about this, because I'm the newbie in the group, but I think he'd appreciate it and we'd all benefit. Thanks in advance.