The Koehler Sisters have a "sibling synchronicity" that brings duet fiddling to a new level of beauty and intricacy.  Fiddling together for most of their lives, Gretchen & Rebecca's special musical bond was recognized in TIME Magazine and syndicated TV series, "On the Road with Charles Kurault" and "PM Magazine" while they were still in elementary & middle school.  By their teens, they had won fiddle championships in nine states and three provinces, including the prestigious Duet Class in Shelburne, Ontario, which was broadcast nationally on CBC Radio. As adults, their musical highlight was bringing traditional fiddling to the historic workshop of 17th century master violin maker Antonio Stradivari in Cremona, Italy.

Growing up in New England, the Koehlers began their career steeped in the Old Time style of fiddling. As they travelled, they became well versed in many American, Canadian and Celtic traditions. Both classically trained violinists, Gretchen & Rebecca have bridged the fiddle and classical worlds, performing as fiddle soloists with orchestras in the US and Europe. Settling in Northern New York State, Gretchen has made it her life's work to pass on the tradition-- for which she was awarded a Heritage Award from Traditional Arts in Upstate New York (TAUNY) and inducted into the New York State Fiddlers' Hall of Fame.  In addition to fiddling,  Rebecca is also an Irish and Canadian step dancer.

Gretchen and Rebecca have four recordings together including Parallel Lines/Celtic Fiddles which highlights Gretchen's string arranging around the New England Contra/Irish repertoire, and The Fiddlers' Three with fiddler Don Woodcock, which features Old Time tunes in three part harmony. 

In addition to performing with her sister, Gretchen plays traditional Irish/New England repertoire with NYC jazz pianist, Daniel Kelly in their duo, Koehler & Kelly and plays old time music with fiddler, Don Woodcock in Northern New York and if often joined by her son Sylvain Foisy on fiddle and step dance. Rebecca has worked as a studio musician with folk singers including Dar Williams (The Honesty Room) and performs with her husband, guitarist Brandt Kronholm in their home in Southern Texas.