His performance in Mariana, Mariana was his debut and farewell. Juan Carlos Andrews is an outstanding electronics engineer graduated from UNAM. His professional thesis, Acoustic Analysis of the Javier Barros Sierra Auditorium, set new precedents in sound conditioning and equipment of the maximum house of studies. At the invitation of a theater producer friend, at the age of 21 Juan Carlos joined the technical staff of the first staging of Beauty and the Beast, OCESA's mega-production staged in Mexico in the mid-nineties. It was in musical theater that Juan Carlos learned about specialized microphones, orchestra consoles and special effects from live sound expert Luis Lojo. So our interviewee rose quickly: from operating sound effects on Beauty and the Beast he went on to become chief engineer on Rent and audio design on Man of La Mancha. Juan Carlos has been a volunteer for the SYDA Foundation, a non-profit organization that promotes educational, live and broadcast events in 150 cities around the world. Since 2002 he was chief sound engineer with tours in the United States, Asia and Europe; finally, he adopted New York as his place of residence and met again with Luis Lojo, who invited him to Jazz at Lincoln Center,