Alive» is the lead single from Australian singer and songwriter Sia’s forthcoming album This Is Acting. It was co-written by Sia, Adele, and Tobias Jesso Jr.
In September 2015, Sia confirmed that This Is Acting ’s lead single «Alive» would be released later that month and was originally written for Adele. She described that the song «was about Adele’s life» and «written in Adele’s perspective». She further explained to Ryan Seacrest that the song was written in a writing session with Adele for her third album 25, but was rejected at the last minute. Rihanna also rejected the tune.