"In 2009, to commemorate the 40th anniversary of Woodstock, Zax produced the boxed set "", for which he was nominated for a Grammy for Best Historical Album.Zax and engineer Brian Kehew reconstructed all three days of the Woodstock audio from the original multi-track tapes; "The way we approached all of the material was as if it was a cinéma verité documentary–the raw record of the event", Zax said.