Omaha Sessions is an album released by 311 only on their website in October 1998 which contains re-masterings of highlights from their first three albums: Dammit!, Hydroponic, and Unity.
S.A. Martinez doesn't have a big role in the songs contained on this disc due to him only being a guest member of the band during their early years. Soon after these albums were originally completed, he became a full-time member.