All my previous tune arrangements were for EC and piano. Now I've added some for two English Concertinas.
I started collecting the 2 instrument tunes after I've met Guido Bos, the first other Flemish EC player I've met. Our meeting ended with playing 2 instrument tunes together.
Most of the duo tunes are originally fiddle duets. You can play them in any formation with English Concertina, fiddle or clarinet.