Andrea Dieci has been proclaimed "an impressive guitarist" by the Times Herald. He has performed extensively as a soloist, in chamber-music ensembles and with orchestras for prestigious music societies all over Europe, in the USA, Central and South America, Africa and Asia, including the Spoleto Festival of Two Worlds, Settimana Musicale of Siena, Teatro Angelicum in Milan, Real Academia de Bellas Artes in Madrid, Theatre Municipal in Tunis, Ataturk Centre and Cemal Resit Rey in Istanbul, Memphis State University, California State University and American Guitar Society (Los Angeles). Moreover, he has appeared in music festivals in Germany, England, Switzerland, Poland, Slovakia, Greece and Brazil. In 2003 he made his début in Tokyo at Dai-Ichi Seimei Hall, followed by a long sell-out tour of Japan. In the same year he was invited to play at the International Guitar Fest organized by the Guitar Foundation of America in Mérida (Mexico).

Dieci’s performances have been broadcast by major radio and TV companies including Italian Radio-Television (RAI), Swiss-Italian Radio (RTSI) and Radio Nacional Española. In 2003 he performed live on the BBC.

Andrea Dieci's several CDs for MAP Golden, Bèrben and Nuova Era labels have been highly praised by the leading music magazines. His recordings include Villa-Lobos' Douze Etudes, Ponce's 24 Preludes and the world premiere recording of Ponce's Sonatina Meridional in the version of the composer’s manuscript. His most recent double CD, dedicated to the complete works for solo guitar by Toru Takemitsu, was released in 2004 under MAP Golden label.

Andrea Dieci currently teaches at the “G. Regondi” Guitar Academy in Bergamo (Italy). He has presented masterclasses at important music institutions in Italy and abroad: Milan’s “Giuseppe Verdi” Conservatory, Memphis State University, California State University and Guitar Foundation of America (USA); Santa Maria University (Brazil); Nihon Guitar Conservatory (Japan).