How I Met Your Mother’s Robin Scherbatsky (Cobie Smulders) has a past — as Robin Sparkles, the Canadian teen pop star. Maybe you remember her hit “Let’s Go to the Mall?”

“Let’s Go to the Mall” became a viral smash, so HIMYM came up with a B-side song for Robin Sparkles, called “Sandcastles in the Sand.” Check out the video clip above or listen to the full song here.

You can see the full Robin Sparkles video after the April 21 How I Met Your Mother — you won’t want to miss it when James Van Der Beek, Alan Thicke and Tiffany guest star.