becuadrado . ( Of natural sign ). 1. m. Mús. First properties in plain or Gregorian chant, which is based on the hexachord sol, la, si, do, re, mi, notes that, to solfeadas, change their names in do, re, mi, fa, sol, the. sing by becuadrado . 1. loc. verb. Mús. Rotate within the degrees of the diatonic scale of c, initiating in the fifth grade, formerly marked with a (g).