Michael Guerra or better known by his stage name Sau, began his music career in high school. He quickly developed his writing capabilities and along with three other close friends formed the group AK-4. Together the group put out two projects titled "The Ivy League Mixtape" and "The Writers Reference Mixtape". Soon after second release the group disbanded. Sau then went on to pursue his music career as a solo artist. Since becoming a solo artists he has released the well rounded project "The Revision Mixtape". Since the release he has been performing and promoting for the project. Along with that he has also been steadly recording new material. He will continue to pursue his passion for music and will continue to push the creative boundaries for not only Hip-Hop but music in general.