James Corden and Demi Lovato Perform Singing Telegrams: Watch

Courtesy of The Late Late Show with James Corden
Demi Lovato and James Corden travel around Los Angeles delivering singing telegrams on The Late Late Show with James Corden on Aug. 4, 2015.

James Corden continued to show off his singing ability on Tuesday's Late Late Show.

But instead of taking guest Demi Lovato on another "carpool karaoke" outing, the host and Lovato took their singing door to door.

"I really want to get into this singing telegram business," Corden said as they hit the road.

Rod Stewart Headbangs, Tells 'Shagging' Stories and Performs with A$AP Rocky in 'Carpool Karaoke'

They start off by surprising Dry Bar employee Sarah at work. She's just earned a promotion, and what better way to celebrate than with a twangy singing telegram duet with these choice lyrics: Sarah Works the DryBar/She's been with them 3 years/and when it comes to blowing people/Sarah has no fear…

Next up is a birthday telegram in the tune of "Banana Boat Song (Day O)" — which wears the duo out, so they take a bubble tea break.

Lovato suggests that they really should sing for the guys behind the counter. "Would you rather money for the teas, or we sing you a song?" Corden asks an employee.

"Money," the worker replies without missing a beat.

Watch One Direction and James Corden Play Dodgeball 

Their final telegram is delivered to a dentist (in the middle of examining a patient) who has successfully raised $6,000 for the YMCA.

That's when the game really goes next-level.

Hint: As they leave the office after a job well done, Corden muses, "We might be the world's first singing telegram, mobile barbers. Am I right?"

Watch the full video below.