It's hard to listen to John Barry's rousing instrumental opening title theme from On Her Majesty's Secret Service without going up to a mirror and pretending to aim a gun while kneeling, just like OHMSS star George Lazenby did in the film's gunbarrel sequence (the only Bond who kneeled in his gunbarrel). It's also hard to add lyrics to it that don't suck ass.
Try making up your own lyrics to the OHMSS main title theme sometime. Of course you're going to include the movie's cumbersome title in your made-up lyrics, but it won't sound right, even when you prolong the "Maj" in "Majesty's" to get the title to match Barry's nine-note brass melody. Just give up like Barry and his songwriter most likely did.
The switch from Sean Connery to Lazenby must have inspired Barry to change up the Bond sound and use synths for the first time in the series. "That [synthy sound] and the single-mindedness of Barry's instrumental main title makes it one of the most revered of all the 007 scores among Bond aficionados," wrote Jeff Bond (no relation) in the liner notes for the 2002 expanded reissue of the OHMSS score.
Sixteen years after OHMSS, Barry made an interesting musical choice when he resurrected the OHMSS main title theme's synth riffs in his View to a Kill score, perhaps as both a shout-out to the OHMSS ski chase sequences that featured his main title theme (A View to a Kill was the first Bond film with a skiing sequence that Barry scored since OHMSS) and a nod to the 1985 film's Silicon Valley-related plot. The OHMSS and View to a Kill scores are two of my favorite scores in the series, and that's mostly due to the presence of this excellent OHMSS theme, the tune that can't be lyricized, no matter how hard you try.