Okay before I get into anything, I colored Chara so here. It came out mediocre I think. Nothing to complain about, nothing to really love. Didn't do a lot of shading because it didn't seem necessary for the picture

Anyways, on to the main topic. So I'm doing a pretty big Undertale picture where the main characters are pretty much in a band together. So here are my initial planning sketches.

Excuse the Frisk. It's an abomination xS it got better as I drew it in my real sketch I promise. Also, Mettaton won't be included in the actual drawing because it was feeling a little cluttered already and I couldn't exactly find a suitable place for him.

So on to the first sketch WIP

This is what I hade done yesterday night and I was planning on posting this then, but obviously I didn't. Here's the finished sketch.

Sorry about the bad quality on this one. The lines most places are pretty refined, but I might do some more refining before tracing/inking. And yes, sans is so lazy he couldn't even use his hands to hold up his trombone. He's just using his eye to play the whole time xD. Also I added Chara and Flowey after the fact because it was looking a tad empty near Asriel and Frisk. If you can't tell Flowey is playing a kazoo and Chara is reluctantly whistling a few notes. That's about it for now, I'll update you when I get any further.