Leah Siegel is an American singer-songwriter and musician performing under the name Firehorse. Siegel wrote a song in a commercial for Topsy Foundation, which promotes early childhood development in the Mpumalanga province of South Africa. The commercial won a Clio Award, Grand LIA and award at Cannes, in addition to being named an "ad worth spreading" by the nonprofit group TED Conference. The 90-second clip was shown in its entirety in the It's not all doom and gloom section of Russell Howard's Good News on BBC2 in 2010. Siegel co-wrote the theme for Haven with Andre Fratto.