Well there is this that came out recently. It's a cover album, but it's close enough and the first thing that comes to mind. Hyped for the new 2016 season to come out in 2017... if it does.
Spoiler:
Also this gem from my first year of university when I was hella depressed and needed a pick-me-up. MLP filled the void in my life with it's childish bubbliness. Eventually I left the show behind, but S1 and S2 were collectively a fun ride!