Anders Koppel’s borderless view of music has taken in everything from psychedelic rock to world music and avant-garde concert pieces. But his gregarious musical aesthetic has found a special home in the world of the instrumental concerto, a genre whose exchange of energies continues to inspire him. Three of Koppel’s most charming concertos are heard here in new recordings from the musicians who inspired them and the Danish Sinfonietta, that commissioned and first performed them.