In a basement on a narrow street just a couple of minutes from Akasaka station, Crawfish is a lively, intimate 'live house', a small music venue that holds regular gigs by local musicians, mostly of the rock, indie and folk varieties. The cover charge is generally low, and the drinks and food are reasonably priced, making it a fun place to hang out, see some good music and meet a friendly mixed crowd, Japanese and foreigners alike.
I came to Japan from Manchester, England in 2003, and have travelled a lot since then, around Japan and in Asia. When I'm not working, I write satire and perform stand-up comedy in and around Tokyo. Check YouTube for a taste.