Janusz Zdunek 4Syfon – To Prawda - Mózg 005 CD
- Alto Saxophone – Tomasz Glazik
- Backing Vocals, Melodica – Mateusz Janiszewski
- Bass Guitar – Władysław Refling
- Drums – Jacek Buhl
- Flugelhorn – Zbigniew Zygmunt
- Lead Vocals – Krzysztof Gruse
- Tenor Saxophone – Artur Wiślicki
- Trombone – Krzysztof Beszczyński
- Trumpet – Janusz Zdunek
- Tuba – Jarosław Łazarski