1. Patrick's Theme - "Great Balls of Fire" (cover of Jerry Lee Lewis's song) by the Misfits, Project 1950
2. Vinnie's Theme - "Ashoka's Farewell" from the Ken Burns 'Civil War' soundtrack (primary theme influence)
3. Overall 'Keeping Up with Thursday' theme - "Rondo" from Dragon Quest Symphonic in Brass
Various selections from the six issues I've done so far are usually a mix of the Steamboy soundtrack, The Rocketeer (James Horner, I think?), some Titanic the film music score, and, no joke, pinball music.
Not gonna lie, pinball music sounds a lot better than most SNES/NES/Genesis music. Twilight Zone and Addam's Family immediately come into mind, but heck, even Dirty Harry or Barry Schmidt's covers of Back to the Future tracks.