Alanis Morissette and Ella Langley Gilbert Flores/Penske Media/Getty Images; Jason Kempin/Getty Images Share on Facebook Share on X Google Preferred Share to Flipboard Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Send an Email Print the Article Post a Comment Alanis Morissette and Ella Langley are set to perform at Spotify's upcoming South by Southwest showcase to celebrate the streaming service's 20th anniversary, The Hollywood Reporter can exclusively reveal, with St. Vincent also on the bill for a DJ set.