The Foo Fighters will bring their Sonic Highways series to digital and DVD/Blu-ray consumers on April 7.

The eight-episode HBO show is getting the deluxe treatment for its home-video release, with bonus footage added to each installment and extended interviews with President Barack Obama, Dan Auerbach of the Black Keys, Chuck D of Public Enemy, Billy Gibbons of ZZ Top, Joan Jett, Dolly Parton, Carrie Underwood, Joe Walsh and others.

Foos frontman Dave Grohl's second directorial outing, Sonic Highways followed 2013's Sound City documentary, and was described by Grohl as "a chronicling of a journey to unravel the fabric of our musical identity ... not only the making of our most ambitious album ... this is Sound City on steroids."

Part behind-the-scenes look at the making of the Sonic Highways album, part travelogue and "love letter to the history of American music," the series shows the Foo Fighters traveling to eight cities (Chicago, Washington DC, Nashville, Austin, Los Angeles, New Orleans, Seattle and New York) and recording a song at each stop after talking and playing with local musical icons along the way. As the press release announcing the digital and DVD/Blu-ray release points out, this affected the sound of Sonic Highways as well as the songwriting: Grohl "held off on putting down words until the last day of each session, so as to be inspired by the experiences, interviews for the HBO series, and other local personalities and experiences that became part of the process."

Pre-orders for Sonic Highways DVD/Blu-ray are scheduled to begin March 9 at and via iTunes. Fans can also purchase DRM-free files direct from the band at their official online store.

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