"I'm Here" is the main theme in Sonic Frontiers. It was composed by Tomoya Ohtani and features vocals by Merry Kirk-Holmes of To Octavia.
The theme itself doesn't include the lyrics up to the first pre-chorus in-game, but the song's piano intro is heard at the game's title screen. A "re-edit" version of the song was also used for the battle with Supreme, with an instrumental track present during the first phase of the battle and the main vocal track heard during its second phase.
While a small glimpse of the track was first heard during the 28 June 2022 Nintendo Direct Mini: Partner Showcase, and later in the Japanese TV spot that also played prior to Japanese screenings of Sonic the Hedgehog 2, the track was officially teased by official Sonic the Hedgehog social media accounts on 8 September 2022. On 12 September 2022, the short version of the song, along with additional "Theme of Starfall Islands", track were made available through the EP Sonic Frontiers - Main Theme EP. The full version was released on 7 December 2022, as part of the Sonic Frontiers Original Soundtrack Stillness & Motion.
With the release of The Final Horizon update for the game on 28 September 2023, the song was remixed with a remastered instrumental and new vocals sung by Kellin Quinn, who did the vocals for the other three Titan bosses in the game. The new rendition, named "I'm Here - Revisited", plays during the second phase of the revamped The End boss, with an instrumental orchestral version playing during the first phase. Unlike the previous version, this rendition includes the opening lyrics in-game. The song featured as part of Sonic Frontiers Expansion Soundtrack Paths Revisited, which released 2 October 2023.