Caprichosa translates to "capricious" or "whimsical." It describes someone who changes their mind or mood often and unpredictably, often driven by sudden desires or impulses.
In "Tal Para Cual," Joe Arroyo uses this word to describe his lover, singing "Caprichosa, pechichona, tan linda haciendo el amor." It paints a picture of a woman who is charmingly unpredictable and perhaps a bit demanding, but whose unique personality is part of her allure. It's a more nuanced word than a simple adjective like "pretty" or "good," making it interesting and memorable.
"Tal Para Cual" opens as a wounded ledger of a one-sided relationship. The singer says he tolerated everything -- "Tolere toda tu obsesión" ("I tolerated all your obsession") -- and taught her a kind of love she never returned, "Te olvidaste del fantástico amor" ("You forgot the fantastic love"). The hurt curdles into something closer to a warning about her, described as "Caprichosa, pechichona, tan linda haciendo el amor" ("Spoiled, pampered, so pretty making love") -- captivating enough that the title's refrain, "Uno tal para cual" ("A perfect match"), reads as much like a taunt as a compliment.
By the coro the complaint turns into a strutting, danceable boast about a rival calling again, "La vil cubana llamó otra vez" ("The vile Cuban called again"), and the song rides that hook -- part accusation, part swagger -- to its end.