In 2006 Marcio received his Diplôme d'Études Musicales in voice from the Conservatoire de Toulouse, France, in the class of Mme. Anne Fondeville. He also studied choral conducting with Professor Rolandas Muleika, and orchestral conducting with Professor Stephan Cardon.
Marcio continued to develop his orchestral conducting, moving to Germany in April 2008 to join the Musikhochschule, Freiburg, studying under Professor Scott Sandmeier. In the same year he was awarded the fourth prize at the Giuseppe Patané Conducting Competition in Grosseto, Italy. He obtained his Bachelor of Music in July 2011.
Subsequently Marcio moved to London to undertake a Masters in orchestral conducting at the Royal College of Music, studying under professors Peter Stark and Robin O'Neill. In 2012 he was one of the three conductors to take part in the London Symphony Orchestra Conducting Master Class with Sir Colin Davis. In July 2013 he secured his Masters degree, and in November 2014 he was one of the three finalists at the Princess Astrid International Conducting Competition in Trondheim, Norway, with the Trondheim Symphony Orchestra.
Marcio is the music director of the Grange Choral Society and the Hastings Philharmonic Choir. He is also founder and artistic director of the Hastings Philharmonic Orchestra and Ensemble OrQuesta. He was artistic director of the Woodhouse Opera Festival from 2012 until its final season in 2018. He has conducted the Pforzheimkammerorchester (Germany), Orchestra Sinfonica della Magna Grecia (Italy), Horizon Ensemble Bydgoszcz (Poland), Württembergische Philharmonie (Germany), Südwestdeutschephilharmonie Konstanz (Germany), Stuttgartkammerorchester (Germany), Nord Tchechische Philarmonie (Czech Republic), Orquestra Sinfonica de Minas Gerais (Brazil), Eskişehir Metropolitan Orchestra (Turkey), Çukurova Symphony Orchestra (Turkey) and the Kosovo Philharmonic Orchestra (Kosovo).
In recent years Marcio has conducted and/or directed over 20 fully staged productions of operas, ranging from less regularly performed works such as Lully's Armide, to very popular works such as Carmen, The Magic Flute and La Boheme with a big focus on the Baroque opera repertoire. In these productions, Marcio usually serves as music and stage director, also acting as lighting designer, choreographer, continuo and baroque guitar player. Together with lutenist Cedric Meyer, Marcio has also undertook a number of new editions of rarely performed baroque operas: Xerse (Cavalli), Cephale et Procris (Jacquet de la Guerre), Euridice (Caccini) and L’Egisto (Cavalli). In these editions, Marcio not only reviews the material from the manuscripts but re-works the entire piece, producing a unique new version of the opera.
Since 2014 Marcio has organized a number of Opera Academies each year. These have given many singers from across the world the opportunity to study and perform an operatic work at a high artistic level. During these courses Marcio offers coaching in languages (being fluent in seven himself), vocal technique, style, interpretation and staging.
Marcio also has considerable experience of oratorio, having conducted most of the mainstream romantic and baroque oratorio repertoire.
As a singer (baritone and countertenor) Marcio has performed the roles of Arnalta in L'Incoronazione di Poppea (Monteverdi), Mercurio in La Callisto (Cavalli), Colas in Bastien et Bastienne (Mozart), La Haine in Armide (Lully), Aeneas in Dido & Aeneas (Purcell), Aristone in Xerse (Cavalli) and Thesee in Hippolyte et Aricie (Rameau). He also performs regularly as a chamber music soloist. He has fully performed Dichterliebe (Schumann), Winterreise (Schubert), Songs of Travel and House of Life (Vaughan Williams) and 7 Canciones Populares (De Falla).He has also performed extensively as a chorist at the Theatre du Capitole (Toulouse), Theatre des Champs Elysees (Paris) and Theatre du Chatelet (Paris).
Marcio is also a composer. His works include choral a capella pieces, art songs with piano accompaniment and a Te Deum for soloists, chorus and orchestra.
In 2021 he will be debuting with Hampstead Garden Opera as both music and stage director of Cavalli's L'Egisto.