Dario Sotelo graduated with degrees in Piano, Violin, Viola and Fine Arts, and in 1983 joined the Conservatory of Tatui.  In 1984 he formed his first children's orchestra, and from 1986 to 1991 he was in charge of the String Department.

In 1991, he received a scholarship from British Council to complete the master degree in conducting at City University of London, where he studied with Ezra Rachlin, disciple of the great conductor Fritz Reiner.  As part of this course, he conducted four concertos, appearing as a special guest for one performance.

Returning to Brazil in 1993, Sotelo was invited to be the Artistic Director and Conductor of the Brazilian Wind Orchestra and since 1998 he has been the Principal Conductor of the Paulista Symphonic Orchestra.  In 2002 and 2004 he became the General Coordinator of the "I and II South-America Regional Conference of Wind Band Composers, Arrangers and Conductors".  In 2006 he established the I National Composers Meeting in Tatui and in 2007 the I Latin American Meeting of Composers, Arrangers and Band Directors.

He established very close collaborations with Brazilian composers and arrangers through commissioning, revising, editing and premiering new works with the symphonic and string orchestra and Brazilian compositions.  Sotelo has been invited to conduct in numerous countries around the world including:  Hungary, Spain, England, USA, South Africa, Paraguay, Argentina and within his native Brazil.