Josh Groban is among the engaging guests on tonights episode of The Graham Norton Show.

• uVelaphi: Unathi Msengana, Mzansi Magic, 17.30

Thomas Gumede gets to know Unathi Msengana much better when they travel to Grahamstown to retrace her baby and childhood footsteps.

• Night School: An Evening with Stanley Clarke and Friends, Mzansi Music, 19.00

Clarke is a strong believer in teaching music – not just how to perform, but also the production and business aspects of the profession. This show features Clarke with an all-star line-up of musicians performing several of his compositions, including collaborative works with Duke and Corea, and jazz standards by Charles Mingus (Goodbye Porkpie Hat ) and John Coltrane (Giant Steps). Among those performing with Clarke are violinist Karen Briggs; drummers Gerry Brown, Rayford Griffin and Stewart Copeland; Flea of the Red Hot Chili Peppers; Bela Fleck; and Stevie Wonder.

• The Graham Norton Show, BBC Entertainment, 21.00

Josh Groban talks about his new album and says singing came as a surprise to him.

Revealing that not everything goes according to plan in big shows, Josh says: “Your diaphragm does all sorts of crazy things to get to the note. I’ve burped before. It’s always the big Italian numbers.”

• Hotel Impossible, Travel Channel, 21.00

Competition in the hotel business is fierce. Online sites can kill a hotel’s reputation with one bad review. So what can a struggling hotel operator do? Well, they can hire Anthony Melchiorri, one of the most sought-after hotel “fixers” around.