Turbulence, the extended horn section for the Boston-based free improvising ensemble Leap of Faith Orchestra, here with leader PEK, plus Michael Caglianone, Zack Bartolomei, Bob Moores, and Eric Dahlman, all playing instruments from their arsenal of percussive instruments and devices, including recently added electroacoustic devices expanding the band's sound.

The full Boston-area Leap of Faith Orchestra in its largest configuration performing a Frame Notation Score composed by PEK to guide the improvisation, this work based on the The Photon Epoch, a period in the evolution of the early universe, using a vast assemblage of instruments and devices to create a unique narrative in an energetic and wonderfully unpredictable journey.

A larger than previous Boston collective's Turbulence ensemble with 6 of the regular horn players from Leap of Faith Orchestra, performing multi-reedist and instrumentalist PEK's extended framework, with drummer percussionist Yui Zbitnoff; the ensembe breaks down to three duos and guest saxophonist Bob O'Brien, captured live at Outpost 186, in Cambridge, MA in August 2018.

The largest ensemble of Boston-area David M. Peck's Leap of Faith collective using Peck's frame notation compositional method of written descriptions and graphic symbols to allow large ensembles to create major works without extensive rehearsing, accompanied by a 23 page booklet that illustrates that concept and details this 2018 Killian Hall, MIT, concert.