**David is the author of courses such as “Audio, Visuals, Lights: THE Live Performance Masterclass" and "Audio Routing for iOs and Mac Based Operating Systems", which have been purchased by more than 1900 students in 27 languages in 107 countries.** ** He is a BSc in Entertainment Systems, a Sound Engineer, an Audio Visual Technician with over 20 years experience, an Audio Visual Consultant with multi-million audio visual installs to his name, a veteran DJ, drummer and a best selling music producer. He brings all this experience to bear upon his Udemy courses. **  David O'Leary has worn many hats throughout his multi-faceted career in the audio industry including producer, songwriter, engineer, av consultant, technician, sound designer, DJ, multi-media artist, performer and entrepreneur. An innovator in the field of electronic performance, David performs audio visual performance pieces using hardware and software which he has designed, built, and programmed personally. When he’s not working as a solo artist, David is a serial collaborator. His primary collaborative vehicle is the group Erra P, for which David is one of three producers. David O'Leary is the founder, owner, CEO and producer of music education courses under the umbrella of The School of Sound. David has also worked as an Audio Visual Consultant for Fortune 500 companies, overseeing live events and audio visual installs with large scale budgets. To this day he still operates on the front lines in his native Ireland, running visuals, sound and lighting at large scale corporate events for multiple cutting edge technology companies who use Dublin as their European headquarters. David has a BSc in Entertainment Systems; a Diploma and multiple certifications in Music Technology & Sound Engineering. These lay alongside multiple educational awards from Extron, Infocomm, Dante, Pro Tools & Ableton in fields ranging from sound engineering, music composition, social media marketing, information technology, website design & IT networking.