peaceful loop you have there. i don't know how would it loop in game since it's more of a short song than a functional loop but alright. you should probably put more emphasis on the low end (more specifically on the sub part, your bass is fine ig??) of your mix to make the song more full. i'd also suggest eq-ing that harmonica sound to decrease those high frequencies just a bit, as they're seem to be a bit too "grainy".

surprised you're not scouted yet after uploading audios throughout the years. (maybe it's just newgrounds being weird idk) hopefully you have new stuff to show off tho. scouted!!