"Letters and Folds", contains 6 interpretive pieces by French composer Bruno Duplant, realized in multiple layers by Dutch pianist & composer Reinier van Houdt; "Letters" are letter-form scores addressed to van Houdt containing letter sequences distributed across the page; each "Fold" is a response to each letter, combining piano with field recordings made on John Cage's 100th birthday.

Largely derived from piano recordings by Netherlands pianist Reinier van Houdt, a member of both the Ensemble MAE and the Ives Ensemble and heard on the Wandelweiser label, expanded by several field recordings recorded by Michael Pisaro-Liu in Syros (Greece), creating a work in three pieces of rich environments that contrast peaceful passages with powerful ambiance.

erstwhile records releases their first CD on their ErstClass imprint, issuing and collecting historically important work, here with composer Michael Pisaro-Liu's piano works from 1994-2016, 11 compositions performed by Netherlands pianist Reinier van Houdt.