I grew up singing. My mother was a music teacher.

Britton frames her musicality as something rooted in upbringing rather than sudden talent: singing was part of daily life, reinforced by a parent with professional training. The second sentence functions as an explanation for the first, suggesting that her comfort with performance and vocal work comes from early exposure, instruction, and a household where music was valued. In the context of an actor known for roles connected to music (notably on television), the remark also serves to authenticate her relationship to singing—presenting it as a long-standing skill and identity rather than a role-specific affectation.