Koka Mass Jazz is the solo-project-turned-party from Konstantin Katsarski. Katsarski is a sound designer, musician, songwriter, composer, and producer whose tracks are part of the charts and playlists on many radio stations all around the world - including BBC Radio, BBC Radio 2, BBC 6Music, Ibiza Sonica, KCRW Radio, Amazing Radio and more.

 Konstantin could have remained a solo artist, but after creating the concept of Koka Mass Jazz in 2013, a band of musicians quickly became involved. Listeners can expect this talented group's work to cover styles ranging across funky breaks, nu jazz, funk, soul, and even a bit of afro-beat. Music and arrangement of the songs are composed by Katsarski, while the lyrics are written by Denitsa Georgieva, Krustina Kokorska (Krista), Rachel Row, Tiffany Blu and Boyan Levchev. For recording sessions Konstantin works with one of the best Bulgarian jazz musicians, as well as international artists from all around the world.

 On September 2014 the American label Cold Busted released Koka Mass Jazz’s debut single Smile, which went up to 2nd place on the iTunes Funk and R&B Chart. The track was selected as one of the best singles for 2014 and 2015 by three English radio stations: CSRfm, Barricade Radio, аnd Ideal Clubworld Radio. 

 Immediately after its release, Koka Mass Jazz’s album Groovy Jam Shoes went straight to Number 1 on Juno Records Chart for best selling albums in funk style. The record retained its position in the Top 20 for more than 6 months and was picked up at number 6 by Jonathan Redford (Diesler) on Juno DJ Charts and number 5 in the Top 10 Chart for Funk & RnB Releases on the biggest American music shop Beatport. 

 Furthermore Groovy Jam Shoes was declared as Album of the Week on Barricade Radio (UK) and was named as Record ot the Month by Amazing Radio (UK). It was nominated for the Album of the Year by Barricade Radio UK. 

 The legendary music critic Stephen Thomas Erlewine, senior editor of All Music Guide, Chuck Berry’s disciple, wrote on his Twitter’s profile: ‘‘Groovy Jam Shoes by Koka Mass Jazz is my favorite record of the year!" 

 On September 2015 the single Do You Know That was put on Top 10 Chart of the English Streetseekers Radio. 

 His track Jr. Funk is part of the limited edition of the compilation album Only on Vinyl 3 by American label Cold Busted and came out on June, 2nd 2017. 

 Оn September 14/2018, Time Warp Music released the new Koka Mass Jazz album titled Elephunky Trip.

On June 15/2019 Time Warp Music released his album on 12" vinyl.