Green Grass and High Tides is a song featured on the Rock Band disc. Although it was originally written and performed by the southern rock band The Outlaws, the version featured on Rock Band is a cover. It is in the last tier for Guitar and Bass, the 6th tier for the Drums, and the 7th tier for Vocals. The game ranks it as the most difficult song on guitar. A number of factors contribute to this ranking - the song is extremely long and has two tricky solos which almost requires the use of hammer ons and pull offs and skill in very fast strumming. The drum chart is not as difficult, as it is a repetitive and relatively simple beat.