I've been subbing with a few bands now on a steady basis and it has changed my perspective on gigging in ways I hadn't imagined.
It's really good because it's like jumping off a cliff. You get up there and play lots of music with a bunch of people you don't normally play with and it's an awesome feeling when it all comes together and works.
There are times, when the band is good, and you become absorbed by the other players as they listen to the way you're delivering your parts and the whole thing gels together because everyone is listening and equally enthusiastic about doing the gig. They seem to enjoy the new elements a new player brings to the group. That's the good.
When the band is used to playing "the way they play it" and are just going through the motions, it can be hell. What usually happens is that the band has slowly fallen into this dilluted way that they play the songs because they haven't listened to the recordings in months or years and the original vibe of the song gets lost and often just gets lax. Enter the sub. You walk in to the gig having just spent hours with the recordings so you know the tempos, tricks, riffs and subtle nuances that make the songs cool but the band has forgotten and they're just not up for groovin' with you because, they do it the way the do it. Habit. That's the bad. I won't get into the ugly.
So you embark on an evening that has you trying to fit in with some new players and you hope for the best. It can be truly magical, or it can be the longest night of your life! Either way, subbing makes a good player a lot stronger as they try to fit in with the best of situations as well as the worst. I'm subbing tonight and tomorrow night and have spent the last 5 hours going over the material. Fingers crossed and hoping for the best as I approach the cliff!