Kanye West performs secret show inside Texas jail

HOUSTON, Texas -- Kanye West is already in Houston before his Lakewood Church visit, and one of his stops on Friday is jail.

The rap icon-turned-gospel musician visited inmates at the Harris County Jail, the county's sheriff's office said.

West and a choir performed for the inmates.

The "Jesus Walks" rapper is scheduled to meet with Pastor Joel Osteen and his Lakewood Church congregation on Sunday.

SEE ALSO: You'll have 2 chances to see Kanye West at Lakewood Church

West is expected to appear for the Lakewood service at 11 a.m. for a conversation. Later that night at 7 p.m., West is holding his "Sunday Service" performance inside the church.

An e-ticket obtained through ticketmaster.com is required to be inside during West's appearances.

WATCH: More video from Kanye's unannounced jailhouse show

Kanye West vowed his performance was a "mission, not a show" inside Harris Co. jail. His performance was captured on the county sheriff's office YouTube.