She has written for a variety of Canadian artists, including Banners, Donovan Woods, Classified, Jocelyn Alice, and Ria Mae.
[2] In 2015, Isabel, still performing as Breagh MacKinnon, teamed up with fellow singer-songwriters Dylan Guthro and Carleton Stone to form the band Port Cities.
[5] Isabel parted ways with the band in 2019, following the release of their single "Sorry," which was co-produced by Grammy-winning Canadian songwriter and producer Greg Wells.
In the spring of 2020, under the name Breagh Isabel, she featured as a recording artist and co-writer on the single "Good News," by the award-winning Canadian rapper and producer Classified.
[9] In 2020, Isabel joined the roster of Concord Music Publishing in Nashville, which has to led to song placements in 2021 on Grey's Anatomy and Batwoman.