This week's music guests collaborate on a song. With only 40 minutes rehearsal.
Exeter singer songwriter Rob Murphy says he has enjoyed creating bands in the past, but has "come back to where I started, my roots, just me and a guitar."Rob's Facebook page
His influences range from Nirvana, Ray Lamontagne, Ben Harper, R.E.M, Oasis, "in fact anything with a good melody," he says.
He'll be joining us to tell us more and to play a couple of acoustic songs on this morning's show.
Semi-Toned are a group of students from Exeter University who do vocal covers of contemporary music without any instruments.Semi-Toned on Facebook
The group is in its third year of existence and will be in to perform live on this morning's show.
We'll meet former choirboys Jon Minter, Edd Scott, Theo Cowper, Simon Eaton, Jamie Blencowe, Ben Street, Michael Luya, Ben Dale, Adam Carpenter, Joe Lane, Eddie Henley and Ed Jillings.
Secrets For September
Ellie Taylor, Matthew North, Mike Soundy and JP Stevenson are Secrets For September.Secrets For September's website
The band's musical sound is a mix of the likes of Pink Floyd and All
About Eve with strong melodies and female vocals.
And they have some celebrity friends too - Roger O’Donnell (from The Cure) played synths on the bands first two singles.
And Arthur Brown from The Crazy World of... has this to say about them - "I’m really impressed with the sounds Secrets For September are making right now".
Barbershopera is a comedy barbershop quartet.Barbershopera's website
Their shows always retain the original, simple premise: three guys and a girl singing a fully formed a cappella musical.
They are back at The Theatre Royal in Plymouth with their show - The Three Musketeers - and Rob, Will, Pete and Lara will be spending their Saturday morning on BBC Radio Devon.
All for one and one for all......
Georgina (Gorgs) Geikie was one of Devon's contenders at the 2012 Olympics.Gorgs' Website
Now she's looking ahead to 2016.
Gorgs will be joining us to tell us about the challenges of preparing for Rio - emotionally, physically and financially.
Chris Robinson is a writer, artist and broadcaster and is Plymouth’s leading historian.
He’s just published his 21st book; "Plymouth in the Fifties and Sixties", the fourth in his series on Plymouth in the Twentieth Century.
He and his colleague, Alan Tibbitts have also made a number of films about the area, all of which have proved very popular.
"Robbo" will be back at his old stomping ground (he's a former BBC Radio Devon presenter) to join in the Saturday morning fun.
Break open the popcorn and listen to what BBC Radio Devon's resident film reviewer thinks of some of this week's new releases.Follow Paul on Twitter
Paul Moxham joins the team after midday.