Gaana is a rap-like "collection of rhythms, beats and sensibilities native to the Dalits of Chennai."[50][51] It evolved over the past two centuries, combining influences from the siddhars (tantric adepts) of ancient Tamilakam, Tamil Sufi saints, and more.[50] Gaana songs are performed at weddings, stage shows, political rallies, and funerals. Performers sing about a wide range of topics, but the essence of gaana is said to be "angst and melancholy" based in life's struggles.[50] In the past few decades, the genre has entered the music of the mainstream Tamil film industry and gained popularity.[50][52] Contemporary gaana bands like The Casteless Collective are bringing the genre to new audiences while using it for social activism, especially against caste discrimination.[50]