A pretty straightforward track, especially on those long stretches of freeway. The idea was also loosely based on Nat King Cole’s “Route 66.” Here, I simply took the longest interstate freeway in the country! “90” was also a deliberate choice to denote the musical decade that was most influential on this track. So it’s an on-the-nose road trip composition – from Seattle to Boston! The downward key change represents the elevational descent.