The Mighty Red song is a song on The Angry Birds Movie:Original Motion Picture Soundtrack. It is sung by The Hatchlings.
Lyrics
Hatchlings: Mighty, Mighty, Red,
you rescued me,
Defender of our homes and liberty!
Jay: Bravery!
Jake: Humility!
Jim: Anger-y!
Hatchlings: Mighty, Mighty, Red,
you...rescued me. La, la, la, la
Laaa, la, la,
La, la, la, la
Terence: Laaa, la, la,
La, la, la, laaaaaaaaaaaaaaaaaaaaaa
- grunts happily*