I love literary, arts and musical names (so I LOVE Amadeus!), and names that not everyone will recognize.
Our horses are all named after famous jazz musicians, since Keith and I are both jazz musicians. Not that the names themselves are all that unusual, but I love having names that make people ask about.
Mingus (after bassist Charles Mingus)
Thelonius (after pianist Thelonius Monk)
Pastorius (after Weather Report bassist Jaco Pastorius)
Funny, but we have yet to name after a saxophonist (I play saxophone)...Keith at least has his guitarist with our cat, Santana)
The other rule is that the name has to be fun to say, because these are their barn names, too. The best one here is Thelonius...it's long, but it falls trippingly off the tongue!!