Interesting concept, I feel like there's potential but 48h is definitely a bit short to fully develop it. As others have said, maybe something akin to the musical levels in Rayman Legends would work better?. The balance between leading the players and giving them creative liberty seems hard to find!

That's an interesting twist on the platformer genre, but I think the execution could use some tweaking (which is hard to get enough of in a game jam).

For example, you could try to make the levels in a way that helps to play a decent melody. Or maybe pivot the game so that it's no longer a platformer, as suggested in another comment.

As for the implementation itself, the controls felt a little floaty.

Nice visuals though. Good job!

Like making music while playing, but it makes holding a key a bit annoying. Also jumps are a little unforgiving for my taste. Could be really cool with more time put into level design to "force" players into making a good music

In theory a very cool idea, saving the file you made is such a genius addition! But it doesn't particularly feel like the average person will make good music from this, which is a shame because if the level was designed differently and the other keys had functionality instead of existing as different notes there's really a lot of potential here to make a great game!

I think you're extremely close to an awesome idea.

Instead of it being a free moving platformer, make it a forced side scroller.

Add a drum track in the background.

Then design the levels such that if played efficiently, it will play a melody.

And score is evaluated based on how close the player was to hitting say, the nearest 16th note for any given jump or other action.

So its ALMOST like a rhythm game, but the melody is not predetermined, the player is just incentivized to play in a rhythm.

(maybe that will work)

Nice idea, although I think it's really really really difficult for someone to create a "melody" while trying to reach the summit, and not a series of mismatching notes xD

Really great idea! My music was awful, but i had fun. maybe the character could be a little more faster and the level less vertical.

Awesome concept! There's a lot more than can be done with this (maybe giving certain notes or patterns (gliss, chords, etc.) special abilities, or having a bass in the background that matches your pace), but for 48 hours u made something pretty neat

Super cool, I like how going left and right have nice complementary chords, especially if you add the extra notes. Intrinsically felt really enjoyable to me and it's funny to try and find a way to play that makes a nice song. Super fun! 

really creative! although the platforming itself is short, attempting to make a better melody added a nice sense of replayability. great job!

very music. love the idea

This is such a creative game! Being able to hear what you played at the end was a nice touch that motivated me to play it again. I'm not very good at making music, but I managed to make something decent!

Really cool idea, and it's so fun to play! I kinda got addicted to trying to make a sick beat while still making it decently far up, lol.

This game idea has potential. Making music while platforming can be so cool. Unfortunately, it was too short, and the spacebar sound may have not been the best. However, this is a game jam, so this could be expanded into something way cooler.

I love the idea! I kinda wish there was some sort of a background melody/metronome/drums to fet our music into.  But this has so much potential and would be lovely to see more developed! The saving feature is also really cool! I enjoyed it very much and replayed it a few times to mess around. :)