After been awarded the diploma on piano at the Conservatorio “G. Verdi” in Turin, and completing his studies at the Accademia Internazionale di Musica in Novara (Italy), Giacomo Platini studied composition with Ivan Fedele at the Conservatorio “G. Verdi” in Como (Italy) and at the Conservatoire National de Région in Strasbourg (France).
He attended Masterclasses held by Niccolò Castiglioni, Gyorgy Ligeti, Betsy Jolas, Magnus Lindberg and Michael Jarrell.

He was selected by the I.R.C.A.M. (Paris) to attend the Stage of Computer Music, and courses of the “Académie d’Été”.

His compositions have been performed at the Cité Internationale Universitaire of Paris, at the Théatre Des Lisières and Italian Cultural Institute of Strasbourg, at the Chartreuse de Villeneuve-lez-Avignon, at the Museum of Art of Lugano (Switzerland), at the Centro para la Difusión de la Música Contemporánea of Madrid, at the “MILANO MUSICA” Festival in Milan, at blurred edges 2016 – Festival für aktuelle Musik Hamburg, at the MUSICAHORA Festival of La Serena (Cile), at the Sala Mozart in Bologna – ‘Città Europee della Cultura 2000’ -, PianoCity Milano, in New York for the exhibition “Pellizza da Volpedo e i divisionisti piemontesi” (Guggenheim Museum) and at the Jack Space of Brooklyn, in China (PRC) at the Electronic Music Week of Shanghai 2011 & the 6° Chamber Music Festival of Beijīng, and at the Alba Music Festival.
His music has been performed by musicians such as Mario Caroli, Françoise Kubler, Zorina Valeria, Carlo Boccadoro, Henri-Michel Garzia, Eliza Garth, Jeff Silberschlag, Orchestra Filarmonica di Stato della Romania, Quartetto d’Archi di Torino, Ensemble In Extremis, Ensemble Accroche Note, Ensemble de Musique Interactive, Mdi ensemble, the Ensemble Vocal “Contraste”, the Antidogma Ensemble, SENTIERI SELVAGGI, il New Made Ensemble.

He is one of the founders of the PRISMA project, an international group of composers which works on computer-aided composition and new axes in musical research.
He is member of SYNTONO project in Paris and boarding member of “The Villa of Composer”, international project for the promotion and preservation of contemporary music.

He is teacher of composition and C.A.C. (computer assisted composition) at the Conservatoire de Musique de Montbéliard (France) and at the IUP – Université de Franche-Comté of Montbéliard, département PSM – Musique et Son pour le Multimédia – (Master 1 and Master 2).
He has given speeches and hold courses by prestigious institutions such as the Sibelius Akademy in Helsinky, the Italian Cultural Institute in Ljubljana (for the ISCM WOLRD MUSIC DAYS), the Italian Cultural Institute in Paris, the Centro Studi Acustica Informatica Musica – AGON in Milan, the Conservatory of Music of Shanghai and the Universities of Hefei and Anqing (China – PRC), the St Mary’s College of Music in Alba (Italy).
In 2017 he was a member of the jury of the 8th edition of the prestigious “Concours International de Composition Henri Dutilleux”.