Tommaso Bai, ko Tommaso Baj, ya kasance kuma mai ba da izini na Italiyanci, mawaƙi, kuma mai tsarawa a Vatican. An haife shi a Crevalcore a wajajen shekarar 1650 kuma ya mutu a Rome a 22 ga watan Disamba 1714. Ya aka mafi kyau a san shi Miserere, wanda ya hada a 1713, wanda ya yi koyi da Gregorio Allegri 's Miserere. Bai yaba ne saboda tsananin kulawarsa ga wadatar zuci, lafazin kalmomi, da sanarwa. </ref> Bai was acclaimed for his intricate attention to prosody, accentuation of words, and notation. Hughes, Rupert (1939). Music Lovers' Encyclopedia. New York: Doubleday, Doran and Company, Inc. Baggs, Charles Michael (1839). The Ceremonies of Holy-Week at the Vatican and S. John Lateran's Described and Illustrated from History and Antiquities; with an Account of the Armenian Mass at Rome on Holy-Saturday, Etc (in Turanci). Rome. Proceedings of the Musical Association (in Turanci). Whitehead & Miller, Limited for the Musical Association. 1875.