"It Doesn't Matter" is Sonic the Hedgehog's theme song in Sonic Adventure and Sonic Adventure 2. In Sonic Adventure, the song has a BPM around 120, and the song (verses especially) is a little more laid back. In Sonic Adventure 2, the song is much faster and has a different melody and arrangement. In 2014, a remix named "It Doesn’t Matter -RMX 2.014k" was released as a single along with both vocal and instrumental albums Passion & Pride: Anthems with Attitude from the Sonic Adventure Era. It's based on the Sonic Adventure 2 version.