As well as a composer, I am an experienced arranger, providing well-written scores and parts for

orchestras, bigbands, string and wind groups, rhythm sections, voices and more. I have about 25 years of experience, mainly in jazz, pop, rock and classical. I can more or less adapt to any style - and I like a challenge. Arranging gigs can be of different levels of creativity - from transcription over orchestration to practically co- or re-composing everything. I also do layout and engraving. 

In addition, I can offer connection to musicians/orchestras and studios, and I can direct/conduct the rehearsals, performance or recording. 

Here are a few examples, mainly of string and orchestra arrangements. 

For my work for jazz bigband and other ensemble types, check my composer page 



Ay Say w. Aarhus Symphony Orchestra (

+ Aarhus Jazz Orchestra 5,4,4,rtm 

Comp/lyrics: Ay Say/trad.

Orchestra and Bigband arr. by Kasper Bai

Kasper Bai Trio

w. Budapest Art Orchestra.

Comp/lyrics and orchestra arr. by Kasper Bai. 

Christian Vuust/Ordklang

Comp: Christian Vuust

feat. Peter Laugesen (Text)

String trio arr. by Kasper Bai


Comp/lyrics: Stinne Henriksen.

String quartet and rhythm section arr. by Kasper Bai

Morten Kjær

Comp/lyrics: Morten Kjær

String quartet arr. by Kasper Bai


Comp/lyrics: Stinne Henriksen.

String quartet, woodwinds and rhythm section arr. by Kasper Bai

Bruce Guthro w. DR Underholdnings Orkester. 2222-2210-timp.perc-str

Comp/lyrics: Bruce Guthro. Orchestra arr. by Henrik Lynbech & Kasper Bai 

Kasper Bai

Comp/lyrics, string trio + clarinet arr. by Kasper Bai. 


Aggerbæk Kvintet + String trio, 2ww, 3br

comp/lyrics: Benjamin Aggerbæk

Wind + string arr by Kasper Bai