"In the Jailhouse Now" is an American novelty blues song originally found in vaudeville performances from the early 20th century, usually credited to Jimmie Rodgers. The song's first two verses trace the exploits of Ramblin’ Bob, who cheats at cards and gets caught, while the final verse tells about taking a girl named Susie out on the town and winding up in jail together.

Rodgers version of "In the Jailhouse Now" was recorded February 15, 1928, in Camden, New Jersey, and features Rodgers on vocals and guitar, with Ellsworth T. Cozzens playing banjo. Rodgers included his famous yodel throughout the song. He recorded a sequel titled "In the Jailhouse Now—No. 2" in Hollywood, California, in 1930, which follows the misadventures of a man named Campbell.

The song has been covered many times, most frequently with Jimmie Rodgers’ version. Artists who have sung it include Tommy Duncan, Webb Pierce, Pink Anderson, Johnny Cash, Jim Jackson, Leon Russell, Mother McCree's Uptown Jug Champions (featuring Jerry Garcia), Merle Haggard, Doc Watson, Prism, Suzy Bogguss (with Chet Atkins), and Tim Blake Nelson with The Soggy Bottom Boys in the film and soundtrack for O Brother, Where Art Thou?. It was also one of the first songs learned by a teenage Joan Baez. The song shows up under different titles including "He's in the Jailhouse Now," and some versions use the line "She's in the graveyard now" in the chorus.

...
Wikipedia