The workshops are led by an international selection of renowned and established jazz artists who mentor professional as well as amateur jazz, pop, and classical musicians who want to improve their skills on their instrument and participate in different ad hoc musical collectives.
Some of the mentors so far have been Emil Spanyi (HU), Christophe Bras (FR), Georgie Fame (GB), David Gazarov (DE), Erich Bachtraegl (AT), Heinz von Hermann (AT), Boško Petrović (HR), Scott Devine (GB) and dozens of others. Of the Slovene mentors, guitarist, composer, arranger, producer, and organiser Primož Grašič regularly participates, as do a lot of musicians who otherwise play in the RTV Slovenia Big Band.
Some of the artists presented on the evening stages have been Big Band Krško, Bossa de Novo, Jure Pukl Quartet, Big band Dom, Ratko Divjak Trio, Blues Breakers (AT), Dubravko Vorih & New Tribe (HR), Binho Carvalho Band (BR, SI), Mike Sponza Band & Joyce Yuille (US, IT), David Gazarov trio (DE) and numerous others. In the course of the Jazz Kamp Kranj days, the participants of the workshops as well as their mentors also have an evening each dedicated to their respective concerts.
The Summer Jazz Academy from the Croatian city of Grožnjan is regularly invited to the Jazz Kamp Kranj. This is due to the fact that the late Croatian musician Boško Petrović, the founder of the festival and summer jazz school in Grožnjan, had a very long and productive collaboration with Primož Grašić. Their cooperation led to the Jazz Kamp Kranj traditionally having its day in Grožnjan and the Grožnjan "academy" in Kranj.