Wow! The mystery has been solved! For years, we’ve always been super curious about an unknown song that No Doubt teased us with during the making of Rock Steady. A clip from an “unknown song” surfaced that featured a heavy reggae beat with Gwen cooing softly over the melody while the band was recording in Jamaica. It’s always been a mystery what song this was… until now! YouTube’s King Flashman commented on my video saying it was actually a studio cover of Marcia Griffiths “Mark My Word.” It’s so awesome and I really, really wish No Doubt released this cover. It’s killer from what we can hear! Check out the original version below.