Iridescence was composed for the "Guinea Pigs in Bow Ties" concert at the 2016 Bowdoin International Music Festival. I found out at 10 PM on a Thursday who I would be writing for, and then I wrote the piece in the next 36 hours, leaving 12 hours for Sam and Stephen to rehearse and perform it at 10 PM on Saturday.
This wild and virtuosic composition was written for Duo Fritz: Colin Sorgi, violin, and Jonathan Godfrey, guitar. As the title implies, it is a musical adrenaline rush, speeding forward from the beginning. It is highly chromatic and highly violent for the first couple minutes before winding down into a mesmerizing textural section that features guitar harmonics and muted violin trills. The music picks up once again and speeds to the finish, getting faster and faster, higher and higher until the music breaks down into pieces. The video below is of Delyana Lazarova, violin, and Jonathan Godfrey, guitar.
All elements of this piece are based on the harmonic series, and I take advantage of the open horn and natural cello harmonics to embrace the 'out-of-tune' nature of some of the harmonic partials. I allow much freedom with tempo and rhythm, including some improvisatory sections for the cello.