Each note is close to a frequency used in DTMF, a.k.a. the sounds that touchtone phones make. Assigning notes to frequencies gets you a number on the phone keypad. The duration of each note signifies how many times to press that key to get a letter. The first and last notes are dial tones. The rest of the letters spell the phrase "ITALIAN WORD MEANING BELLTOWER" which clues the answer, CAMPANILE.