Hans-Ola Ericsson has been played on NTS shows including Who's That Girl? w/ Leyla Pillai , with Principal Sound first played on 6 January 2020.

Hans-Ola Ericsson (born 1958 in Stockholm) is a Swedish organist and composer.

Ericsson studied church music at the Royal College of Music in Stockholm, and continued his organ and composition studies at the Hochschule für Musik Freiburg in Germany. He also studied privately with Luigi Nono and Olivier Messiaen. Most influential among his composition teachers have been Klaus Huber, Brian Ferneyhough, and Nono.

In 1988, Ericsson was appointed professor of organ repertoire playing at the Piteå School of Music, a department of the Luleå University of Technology. In the summer of 1990 he was instructor at the summer course for new music in Darmstadt and was awarded the prestigious Kranichsteiner Musikpreis. In 1996 Hans-Ola Ericsson was appointed permanent guest professor at the Hochschule für Künste in Bremen, Germany. In the spring of 2000 he was named a member of the Royal Swedish Academy of Music and he received the Swedish Society of Composers interpretation prize in 1999. He was from 2002 until 2006 Principal Guest Organist of the Lahti Organ Festival in Finland. From 2005 he is artistic consultant for the Bodø International Organ Festival in Norway. In 2011 he was appointed professor of organ at the McGill University’s Schulich School of Music.

Ericsson has given concerts throughout Europe as well as in Japan and the USA and Canada. He is probably most known for his interpretations of contemporary organ literature, and a notable interpreter of the music of Messiaen. He has made numerous recordings including a highly acclaimed complete recording of Messiaen's organ music, being awarded the Swedish Gramophone Prize annually between 1985 and 1988.

Hans-Ola Ericsson is also engaged in organ-restoration projects as well as holding courses in Europe and the USA. He served as the project leader of the "Övertorneå-project", an exhaustive documentation, reconstruction and restoration of the most important instrument of the Swedish Baroque, the organ of the German Church in Stockholm. He has also led the work with the Woehl-built organ in Studio Acusticum concert hall, Piteå. He has held guest professorships in Riga, Copenhagen, Helsinki and Amsterdam, as well as lectured and performed at a large number of leading organ festivals and academic symposia worldwide, persistently campaigning for the quality of new music and its right to be heard.