Omar was born in Orzinuovi (Brescia) in 1984 and completed his musical studies at Conservatorio "Luca Marenzio" in Brescia. He won the first prize at Concorso Musicale Città di Cremona (in 1996 and 1997) and Città di Manerbio in 1999.
He was Principal trumpet in several national and international orchestras including Orchestra del Teatro alla Scala, the Janacek Festival Orchestra, the World Youth Orchestra and Seoul Philarmonic. He attended a variety of stages and masterclasses with eminent international trumpet players including Pierre Thibaud, Fred Mills, Stephen Burns, Hans Gansch, John Miller, Max Sommerhalder, Giuseppe Bodanza, Vincent Penzarella and Philip Smith.
From 2001 to 2003 he was a member of the European Union Youth Orchestra and was awarded the Bronze Medal of the Italian Republic for high artistic merit.
From 2004 to 2008 he was Principal trumpet in Orchestra del Maggio Musicale Fiorentino, with Maestro Zubin Mehta as Chief Conductor and From 2008 to 2013 he was Principal trumpet in Orchestra dell'Accademia Nazionale di Santa Cecilia in Roma, directed by Antonio Pappano.
He has been Principal trumpet of Royal Concertgebouw Orchestra Amsterdam since August 2013.