Ortelli is well known in the southern Alps regions of Italy, Austria and Switzerland for being the composer of the famous Trentino folk song "La Montanara" (The Song of the Mountains). Ortelli, according to his own account, conceived the melody and lyrics in 1927 while being on an excursion in the mountains of the Pian della Mussa in the Val d'Ala (Piedmont) and listening to the song of a shepherd. Luigi Pigarelli, under the pseudonym Pierluigi Galli, has added other vocal parts to harmonize it as a choral piece for men's choir. It has been translated into 148 languages.
- Santin, Luciano. "L'ottantenne "Montanara"". Messaggeroveneto. Retrieved September 23, 2018.
- Original lyrics and English translation of "La Montanara" at the Wayback Machine (archived October 26, 2009)
- A 2006 recording of "La Montanara" performed by the Croz Corona Choir can be found on ItalyHertiage.com at https://www.italyheritage.com/italian-songs/traditional/la-montanara.htm (accessed on September 23, 2018).