Although the Foo Fighters HBO series has wrapped up the groups frontman isn't slowing down on promoting the band latest album 'Sonic Highways'. Recently Dave Grohl sat down iTunes radio and dove a little deeper into what created 'Sonic Highways', the bands eight studio album. Grohl takes listeners through each city and how they inspired the music for each of the eight tracks. He also talks about all the amazing bands and musicians who aided the Foos in brining the album to life. Head over to iTunes radio now and take a listen. It may just convince you to buy album...that is if you haven't already!