Interview subjects have included Brian Eno, Peter Gabriel, Laurie Anderson, and Philip Glass.

Live performers have included Yo-Yo Ma, Pat Metheny, Loreena McKennitt, Steve Roach, Air and many others.

Echoes was created in 1989 by Kimberly Haas and John Diliberto, a music journalist whose works have appeared in Billboard, Pulse, Jazziz, Down Beat, Musician, and Amazon.com.

He has also produced Peabody Award-winning documentaries for National Public Radio's Jazz Profiles.

Diliberto founded the space music program Star's End in 1976, and it remains on the air to this day.