What is who sings 30 days in the hole?

"30 Days in the Hole" is a song by the British rock band Humble Pie, which was released in 1972. It was written and sung by the band's lead vocalist Steve Marriott. The song was a hit and is considered one of the band's most popular and enduring songs. It has been covered by numerous other artists over the years, including Mr. Big, Gov't Mule, and Blackberry Smoke. The song has also appeared in numerous movies and television shows, cementing its place as a classic rock anthem.