Ackerman founded Windham Hill in 1976 to release an album of his solo guitar music, In Search of the Turtle's Navel.

Ackerman founded Windham Hill in 1976 to release an album of his solo guitar music, In Search of the Turtle's Navel. He has continued to record in this style for the label ever since, even after selling his stake in Windham Hill in 1992. But on Hearing Voices, the artist's signature fretwork plays more of a secondary role to a host of guest vocalists, among them is Curtis King, Happy Rhodes, and Ugandan native Samite, who first appeared on Ackerman's 1998 set Sound of Wind Driven Rain. The resulting collaborations are ideal for introspection, particularly "Before We Left This All Behind" and "Somewhere in All This Green," the latter featuring Windham Hill vet Philip Aaberg on piano. Although some tracks are a bit too sleepy, overall, Hearing Voices is a satisfying venture into new territory for a solo guitar legend.—JC