- Lyubomir Angelov
- choir (1 episode, 2018)
- Desislava Cholakova
- violin (1 episode, 2018)
- Emil Dakov
- choir (1 episode, 2018)
- Gergana Deliiska
- violin (1 episode, 2018)
- Yordan Dimitrov
- concertmaster (1 episode, 2018)
- Petya Dimitrova
- violin (1 episode, 2018)
- Evgeniya Dimova
- viola (1 episode, 2018)
- Iva Dzhadzheva
- violin (1 episode, 2018)
- Simeon Edward
- orchestrator (1 episode, 2018)
- Georgi Elenkov
- music producer (1 episode, 2018)
- Kiril Hristov
- viola (1 episode, 2018)
- Kiril Ivanov
- double bass (1 episode, 2018)
- Ilina Jablenska
- double bass (1 episode, 2018)
- Lena Karni
- double bass (1 episode, 2018)
- Nevena Kehayova
- cello (1 episode, 2018)
- Emiliya Kircheva
- choir (1 episode, 2018)
- Ioan Latrovaliev
- violin (1 episode, 2018)
- Smiliyana Lozanova
- violin (1 episode, 2018)
- Elena Mehandzhiyska
- choir (1 episode, 2018)
- Nikolay Milev
- choir (1 episode, 2018)
- Evgeni Noev
- violin (1 episode, 2018)
- Daniela Panchevska
- choir (1 episode, 2018)
- Sarah Panosyan
- violin (1 episode, 2018)
- Nadya Pavlova
- choir (1 episode, 2018)
- Yuliyan Perikliev
- choir (1 episode, 2018)
- Boris Radilov
- cello (1 episode, 2018)
- Sofia Radilova
- cello (1 episode, 2018)
- Galya Simenova
- choir (1 episode, 2018)
- Dimitar Stoyanov
- choir (1 episode, 2018)
- Yuliyan Stoyanov
- violin (1 episode, 2018)
- Irina Stoyanova
- violin (1 episode, 2018)
- Negina Stoyanova
- violin (1 episode, 2018)
- George Strezov
- conductor / orchestrator (1 episode, 2018)
- Dimitar Tenchev
- cello (1 episode, 2018)
- Dimana Todorova
- choir (1 episode, 2018)
- Boyan Vasilev
- choir (1 episode, 2018)
- Mariya Vulchanova
- viola (1 episode, 2018)
- Stefaniya Yankova
- viola (1 episode, 2018)
- Ivaylo Yordanov
- choir (1 episode, 2018)
