Marco Clarizia took part to numerous seminars and masterclasses featuring specialized professionals:

• "Ready for the performance", vocal warming up conference held by Prof. Franco Fussi and Prof. Daniele Raggi;
• "Refresh the voice", theoretical and applied artistic phoniatry and speech therapy seminar held by Professor Franco Fussi and Doctor Marina Tripodi;
• International SLS teacher conference with Seth Riggs;
• "Physiology and perception of singing"( theoretical and applied artistic phoniatry masterclass) held by professor Franco Fussi , international phoniatrist boasting such names among his patients as Andrea Bocelli, Laura Pausini, Elisa and many more...
• Individual singing classes with Greg Enriquez, vocal trainer for Celine Dion;
• Vocal Clinic with the U.S. jazz pianist and singer Diane Schuur, on jazz vocality, interpretation and improvisation;
• Basic and advanced levels of Estill Voicecraft "voice training system", held by Alejandro Saorin Martinez and Elisa Turlà, with special interventions by Prof. Franco Fussi;
• Teacher training, masterclass and individual singing lessons with Jeffrey Skouson, vocal coach for Broadway's most famous music stars;
• Teacher training with Greg Enriquez;
• Teacher training with Spencer Welch;
• Individual lessons with Seth Riggs;
• Masterclass with Seth Riggs;
• Masterclass with Greg Enriquez on the application of the SLS method to music songs
• Masterclass with Greg Enriquez: "training students for an audition";
• Masterclass with Spencer Welch;
• Masterclass and teacher training with Kathy Kennedy.