Let's see what we have here...
-I'm digging that dramatic beginning already. Definitely reminds me of the "space is scary" vibe Metroid always had. Piano is SO perfect to set the mood.
-That part starting at 1:15 or so is soooo melancholic though! Cello makes it sound totally different from that creepy opening a few seconds ago, I like the transition as well.
-Woooow. And it stays like that <3 I can't beleive that switch from creepy space to melancholic journey just happened. If that's dedicated to someone that made you feel awesome again, then WOW, he or she must've loved this track!
-4:01 DARN IT, I almost forgot: this is Metroid we're talking about XD Goes back to creepy space that Super Metroid loved so much. It's a very exciting feeling to, as if you're going to the exploration of your freakin' life.
Aaaand it's over. Welp, something tells me you're getting better and better at this! Hope you'll take remix suggestions in the future, I wonder what you'd be able to do later on, if you do keep on makin' music. Cheers, man!