Throb (1986)

Recently on her own for the first time, thirty-something single mom, Sandy Beatty takes a job working at "Throb", an independent record label created by ambitious entrepreneur Zach Armstrong. Her son Jeremy and best friend Meredith provide a relatively safe and stable home life while work is filled with ultra-cool twenty-something reminders that she's a fish out of water. Eventually she and Zach begin a romance.