Nice image, great expression. As well as a gig shot it a really good portrait. The only thing i would suggest is to shoot from the left hand side so the guitar is not pointing into the camera. I know it is difficult now at gigs to pick your spot but keep it in mind. I did this type of stuff when i started photography. You get a great buzz when you get a good one. keep at it and build a collection.
Some greats shots there Eddie. Joe Jackson is definitely giving it his usual best.
Off topic. I came across a copy of the 2003 Irish Photgraphy book, loved your canal shots.