There are so many musics that are my favorite. They're mostly Sonic soundtracks, but for a good reason.
There's first this. A soothing melody, fit for a boat docking zone. I consider this also as an underrated music since this comes from a 32X game.
Then this. This amazing piece of track. It's beautiful, well done, and emotional with the echoing guitar, reminding us of what Eggman has done to this once beautiful planet.
More on Sonic Colors soundtrack. This music is the opposite of the one before. It's fast, it hypes you up and makes you smile. It's also amazing and well done, just like all Sonic soundtracks to tell you the truth.
That's all, but I could a one-page list of all my favorite soundtracks, If I could.
Yes, there are THAT much.