He released his debut album
Hola in 1989. At the 1990
Northern Lights Festival Boréal, Lopez and singer-songwriter
James Keelaghan met for the first time and began to explore the fusion of Celtic and Latin music. The duo undertook a number of tours together, and contributed as guest musicians on each other's solo albums before recording two
Juno Award-nominated albums,
Compadres (1997) and
¿Buddy Where You Been? (2007) as a duo. He signed to
Narada Records in 1997. In 1998, Lopez co-produced
Volcán: Tributo a José José, a tribute album dedicated to the iconic Mexican singer
José José. He received a nomination for Best Instrumental Artist at the
Juno Awards of 1998, the same year in which the album
Compadres was nominated for
Best Roots & Traditional Album – Group. At the
Juno Awards of 2002, Lopez won his first award, in the Best Instrumental Album category for ''Armando's Fire
. He won a second Juno Award in the same category for Mi Destino/My Destiny
at the Juno Awards of 2005. Around this time, however, Lopez took a break from performing for two years to deal with depression. As a result, Spirit of the West recorded a tribute song to Lopez, "Come Back Oscar", on their 2004 album Star Trails''. On July 24 that year, Lopez appeared on stage with Spirit of the West at the
Calgary Folk Music Festival to perform the song; After collaborating with Keelaghan on
¿Buddy Where You Been?, which was again a Juno Award nominee for Best Instrumental Album at the
Juno Awards of 2008, his next recording project was with
Pavlo and
Rik Emmett on the album
Trifecta (2009). Credited as P.R.O., the trio toured North America in support of the CD, which was again a Juno Award nominee for Best Instrumental Album at the
Juno Awards of 2010. Lopez released his latest recording
Apasionado on October 21, 2014 as an independent artist. == Awards and nominations ==