https://en.wikipedia.org/wiki/Erik_WestbergLars "Erik" Westberg (born 1 September 1956) is a Swedish conductor and professor in music performance. He studied choral conducting with Professor Eric Ericson at the Royal College of Music, Stockholm 1976–1987. Biography. Westberg was born in Stockholm. He has been the leader of numerous choirs, including the YMCA choir in Stockholm and the Oslo Philharmonic choir.