This song is Dream Theater's tip of the hat to Canadian rockers Rush. Guitarist John Petrucci explained to MusicRadar.com
: "We're such fans – they've been a huge influence on us, and we continue to admire and look up to them. One of the great things about them is how they write really uplifting songs with positive messages, but they always sound cool."
"It's really interesting," he continued. "'The Spirit Of Radio
' – those are big, big songs with big arena-rock riffs in a major key. Even 'Freewill
' has that. The songs aren't dark, but they're tough. It's really hard to write something that can cut both ways like that, but that was my goal."