Tomorrow's Glasgow Mixtape will take place on Glasgow Green and feature acts as varied as indie-folk outfit Admiral Fallow, pop band Bis, troubadour Edywn Collins and Sydney Divine.
Entry to the all-day gig is free and organiser Alun Woodward, of famed local label Chemikal Underground, wanted a bill that would represent as much of the city's proud musical history as possible.
He said: "Glasgow's really varied and there's so much in the city, so we tried to make it reflective of the last 30 or 40 years.
"Glasgow's so strong musically that we could have booked three or four of these events, and had 60 acts rather than 16.
"There are people that it's really important to have on there, such as Sydney Divine.
"That's not the music that Chemikal Underground has traditionally been associated with, but it's music that has an important heritage in the city, and then you place that with someone like Richard Youngs, and that highlights two different sides of music in Glasgow."
Other acts appearing include psychedelic rockers the Phantom Band, ska group the Amphetameanies and long-running vintage jazz outfit the Penman Jazzmen.
The concert ties into both the Commonwealth Games and the summer-long East End Social enterprise that Chemikal Underground are running, which involves a variety of shows taking place throughout the East End, from Platform, in Easterhouse, to The Bowlers Bar, in Bridgeton.Alun's also been impressed by the success of events connected to the Common-wealth Games.
He added: "I think everybody's been saying they have never seen Glasgow like this before, and it's a good side to show."
The programme starts at 10.30am and will run through until 9.30pm, with acts split across two areas on the Green - the Living Room main stage and the Playhouse spiegeltent.