From the Doobie Brothers album „The Captain and Me“. Written by Jim Page (not to be mixed up with the Led Zep guitar hero), a so far unknown-to-me singer / songwriter from Seattle. Funny that speaking out the title takes almost as long as playing the theme.
Standard chords, standard picking pattern, except for the bass which mostly alternates in thirds, not fifths. Roughly 50 seconds of pure fingerpicking fun.