Mark's debut album was honored with two Golden Guitar Awards from the CMAA for Best New Talent of the Year (1996) for the track "The Swimming Song"[6] and Best Video (1997) for "The Dreamer".

[citation needed] In 2007, Mark and Jay moved to Nashville, Tennessee and began performing as a duo and provided support act for artists including Phil Vassar,[11][12] Jimmy Wayne, Sara Evans, and the Oak Ridge Boys.

[13] In 2010, the pair began hosting their own TV show called O'Shea USA which aired on Australia's Country Music Channel (CMC).

The album's first single, "Start Over", written by Mark, Jay, and singer-songwriter Alex Lloyd, peaked at #1 on The Music Network's national Country Airplay chart.

[24] In 2014 Jay collaborated with her birth father, Midnight Oil drummer Rob Hirst on "The Truth Walks Slowly".

Jay met Hirst in 2010 following a long search for her birth parents, after they gave her up for adoption when they were teenagers.

[26] Mark and Jay O'Shea have contributed their talents to the charitable organizations such as World Vision and HeartKids.