A Blue Grass man apparently really wanted to hear the concert Saturday.

John Dennis Murphy, 56, is charged with assault with injury after he allegedly punched another concert-goer about 10:44 p.m. as she tried to sing along at the John Prine concert at the Adler Theatre, according to the Davenport Police Department.

He apparently got upset at her singing, turned in his seat and yelled an obscenity at the victim, police said.

The victim tried to reason with the suspect, but he allegedly hit her on the right side of her face, causing redness and swelling around her eye, police said.

Mr. Prine, described in the past as "the next Dylan," sings about war, love and the environment.

A former Chicago mailman, he won a Grammy for best contemporary folk album for "Fair and Square," which was released in 2005. It was his 18th album.

He was in town playing with Irish-born folk singer Maura O'Connell, who got her start as lead vocalist with the Celtic group DeDanaan in 1981.

Mr. Murphy was free on $1,950 bond Sunday night, according to the Scott County Jail.

His court information was not immediately available.