Iesuè wrote (translated from Italian):[1] The birth date of this organist and composer is deduced as 1605 on the basis of Picinelli's statement: "at the age of 17 [...] he began to publish his works."
In the motet for four choirs Gaudia intonet coelum, the reference to the Pyrénées peace (7 November 1659), which ended the long war between France and Spain, seems clear.
The motet Arcete merores, fugate languores was composed for the birth of the second-born Prince of Spain.Biella (1957), in his Eccellente compositore e organista milanese, praised Grancini as Milan's greatest seventeenth century musician.
Grancini's characteristics are "the clarity and nobility of ideas exposed with a first-rate technique and, as a consequence, a persuasive and interesting logic.
Recitative is always fluid and vibrant, just as alive in the choral episodes and the ensembles he masterfully combines when he uses voices and instruments in counterpoint and fugal interplay of great esteem and beauty.