This is one of those times when I'm at about 40 songs or so, and to get to 50, a bunch of not-quite-finished songs may have to be posted....
this is one of them,.. basically I was playing guitar absent mindedly while watching TV the other day, came across a riff I thought 'hm, has potential for a song' and did a quick iphone recording without shutting off the tv.. played the riff a few times (with a few mistakes but at least it got recorded) and... well, that's it.

vaguely Jerry Garcia -ish, perhaps?