Sorry, forgot to look at my stuff last night. But three more top-40's songs:
Color of the Wind -- Vanessa Williams
She's like the Wind -- Patrick Swayze
Into the Night -- Benny Mardones
Both of the first two are from movies; I like the first much better than the second....
Gloria Estefan has a bolero on the album Mi Tierra, though I can't recall which one(s) they are right now (Maybe "Con Los Anos Que Me Quedan"?).Look at some of Linda Ronstadt's Spanish titles, too... The Mambo Kings did two versions of "Beautiful Maria of My Soul," one in English, one in Spanish -- ones a bolero, I forget which (the other's a rumba).
You can also do an Internet search "bolero dance music" and look at the info some dance studios put up -- often includes names/artists of 3-4 examples of popular songs with the right tempo. Just make sure they're talking about American (Carribbean) bolero, not the unrelated and much-faster dance of Spain....
R