New to me anyway:
Quartetto Gelato

Cynthia Steljes – oboe, English horn
Peter DeSotto – tenor, violin, mandolin
Alexander Sevastian – accordion, piano, bandoneon
Kristina Reiko Cooper – cello

This group is a bit unusual, and it just sounds like a whole lot of fun! Be sure and listen to some of their music if you visit the site.
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