And I posted it on March 31, so you know it's legit. ;)

Q: Is this an April Fools Trick?
A: If it was, I wouldn't say it'd happen this week. It'll be just as true after April 1st as it was during it.

Q: Is this a remix of the Bats song in the show?
A: No. This is an all-new, all-original song inspired by Flutter-bat.

Q: Will it be free or will it cost money?
A: It'll be free, but please consider naming a non-zero price so I can afford to keep making more!