The Legendary Super Powers Show theme song does something that no other Super Friends theme song had done up to that date. There is no narration. Instead, the music of Hoyt Curtain can shine through.
The sequence features some impressive animation, I would say better animation than the actual series, which features all of the main heroes of the show, including Firestorm who was added to the cast for this season. Also added to the cast for this season is El Dorado who doesn't get his name splashed across the screen like Firestorm.
You also get a quick glimpse of the various villains that show up in this series, with an emphasis on Darkseid who acts as the villains' ringleader.