What's the noun for trillos? Here's the word you're looking for.
trill
(music) A rapid alternation between an indicated note and the one above it, in musical notation usually indicated with the letters tr written above the staff.
(phonetics) A type of consonantal sound that is produced by vibrations of the tongue against the place of articulation, for example, Spanish rr.
A small passerine bird of the genusLalage belonging to the cuckoo-shrike family Campephagidae, so called because of the loud trilling calls of the male birds.