I recently scored the bass chair with a very successful 80’s covers band. Audiences are usually between 200 and 400 people. Its the most successful cover band I’ve ever been involved with. We use some form of tracks for almost every song, with the ability to bring up different instrumentation on the fly. Some songs are just a click to sync the light show, others are more robust. I asked “what If I have an emergency that would require a sub?”. They said “ we can’t use subs, the requirement to know the arrangement on the tracks and use of in-ears exclusively makes it virtually impossible to find an adequate sub, especially on short notice. We just crank up the bass in the track, and were covered”. They understand its odd to have bass coming out of the PA and no bass player, but they do it. I had a gig with them in April where the keyboard player couldn’t make the gig. We used tracks exclusively for all the keyboard parts, and there was ALOT of keyboards in their sets, and it went over fine. As a matter of fact, I got paid MORE because we divided the evenings pay up to a smaller group. And it sounded great. But it appears, I’m not required for the show to go on. Fortunately, I sing lead on several songs and backgrounds on a lot of others, and am right up front, with the singer and guitar player as part of the “front line”. So, my value is more of a performer in addition to being a player/singer.