We Are the Crystal Gems

"We Are The Crystal Gems" is a song first sung by Steven in the "Pilot" and is the opening theme song of the show. He describes it as the song he will sing every time they go into battle.

Extended versions
A fuller version of the song was heard in the episode named, "Pilot." It adds the following before the lyrics reproduced above:

At the "Gallery Nucleus Steven Universe/Adventure Time" art show in August 2014, Rebecca Sugar sang an even more extended version of the song.

Translations
See Translations of Steven Universe for a list of translated versions.

Trivia

 * This is the first song ever sung in the series.
 * This song was made into the theme song of the show.
 * At the start of the intro version of the song, the Crystal Gems' gems glow.
 * In the main series, the song was sung by all of the Crystal Gems, while only Steven sang the song in the Pilot.
 * In the last version, sung by Rebecca Sugar in the "Gallery Nucleus Steven Universe/Adventure Time," she replaced too many lines with "Lala-la"s. These lines may be spoilers for the series, so the entirety of the song is still unknown.
 * The melody of this song has been sampled in a handful of other tracks, such as "Steven's Shield (instrumental)" and "Fight, Flight, or Love."