Lindsey Stirling (b. 1986) is a violinist and YouTube star with over 6½ million subscribers to her channel. She gained attention for her fanciful choreography while playing violin in her music videos.
On May 7, 2015, the Muppets appeared on her channel in a music video for "Pure Imagination" with Josh Groban. In it, Kermit the Frog is directing the video while Miss Piggy thinks she's playing violin.