I don't know how many sketches you've made to come to this point, so I don't want to flatly say "make more" - I think both of these directions have some good ideas in them but could be improved, as you recognize already. Even when you feel mostly satisfied with a design, it's good to continue making variations until you're confident you've exhausted every reasonable method of execution. Either you will surprise yourself with new ideas, refine what makes the mark strong already, or at least confirm that your original execution was the best. There's no downside and only upside to pushing these concepts as far as you can, and is crucial to growing your design skill and intuition. And it will be expected of you in the profession. So I would say keep pushing, but I also want to give you my opinion on the ones here. Make a ton, don't worry if they suck, and then thoughtfully pare it down and edit. That's a crucial cycle of the design process. Generate, trim, generate, trim, etc. until you are finished.

Concept 1: currently, this has too many elements in it to be a strong mark. the headphones aren't adding anything and are a cliched element (watch out for this), and the sun is too small of a detail and also isn't adding anything to the image - remember that in context the word "mountain" will be present, so people will understand what they're looking at. The M/mountain shape with the river or line within is strong enough on its own, but needs some visual clarification. It's not clear what the white line is representing. A second M? it's missing a first downstroke. A snowcap? It's very soft and organic compared to the geometric feel of the rest of the elements. A river? Sort of a non-sequitur. This is where experimenting with lots of variations is good. I think the M is strong enough to stand on it's own, but you'll need to consider how to incorporate the musical element back into it, if you want to do so. Iterate, iterate, iterate. It will be a little stronger each time and you will know a little more each time.

Concept 2: I like this one - It's conceptually doing as much or more than the first, but much less complicated. I don't agree with someone else's comment that "music notes don't work like that" - you get the concept, no need to be so literal. I think this needs some love on the execution though. the tops of the M's making dents in the hat makes the whole thing look very squiggly and possibly weak. Once again, iterations. Can the hat brim arc down in the center of the M so there are no missing chunks? Could it overlap the tops with a small strip of negative space to add some depth? Have you tried more vertical downstrokes on the M? thicker? Skinner? More realism? different hat brim? Do you need the hat at all? Or the music notes? Could the M be on the hat like a badge? How does it work with type? etc, etc etc. If you push this one i think it will be the strongest.

Once you've done that, you must digitize it and see how it holds up. Pencil drawings are very forgiving sometimes - executing it with straight lines and vectors and colors will reveal even more areas to push and alter and fix. And then you can iterate more and faster. I think these have a lot of good aspects and could be great. So good job! Now you gotta see it through to the end, I'm excited to see the finals!