Super Meat Boy's soundtrack was a big part of the game's identity, when it came out a few years ago. The work of composer Danny Baranowsky is a part of that game's DNA in a way that isn't always the case in titles.
Unfortunately though, Team Meat are going to be replacing his work for the upcoming PS4 and PS Vita releases of the Super Meat Boy. Ridiculon, David Scatliffe and Laura Shigihara will now be taking over, it was revealed by Team Meat's Tommy Refenes in a blog post.
Baranowsky did give some incite into why this is happening in his own blog post, where he says:
Many of you have probably already seen the news, but my soundtrack for Super Meat Boy will not be in the PS4/Vita versions. This is because I no longer have a working relationship with Team Meat. You may also know that I did not do the soundtrack for The Binding of Isaac: Rebirth. I made a decision a couple years ago to end my working relationship with them for many reasons that don't really need to be listed here. I apologize for any disappointment this may cause my fans.
I didn't feel like the license fee and exposure through PSN they offered was enough to make me seriously consider accepting the deal.
It's sad to see a significant rift between the two parties, since they've made good work together, but hey. Now this is a new soundtrack and more work to admire out there. That's at least a silver lining.