After having a hit performance this past Wednesday on The Tonight Show with Jimmy Fallon, Sia has released her newest album, This is Acting, and it is now available to stream. You can listen to these new songs below.

The 12-track album is a project filled with tracks that were meant for artists like Rihanna, Adele, Beyonce and more. The album includes the collaborative track with Kanye, "Reaper," and the single, "Alive," which was originally written for Adele, with Adele, according to Complex.

Back in February 2015, Sia revealed some details of the album to NME and told them, "I'm calling it This Is Acting because they are songs I was writing for other people, so I didn't go in thinking 'this is something I would say.' It's more like play-acting. It's fun."

Sia performed the hit track, "Iko Iko," alongside Jimmy Fallon, Natalie Portman and The Roots on Wednesday to promote the new album. "Iko Iko," originally titled "Jock-A-Mo," was written in 1953 by Sugar Boy before it was performed by the Dixie Cups in 1965 and since then has been performed by many including Cyndi Lauper, Dr. John and more. Fallon sang back-up and Portman along with The Roots joined in for the chorus. And of course, everyone wore a replica of Sia's signature black and blonde wig.

Sia also performed her track, "Cheap Thrills," on the show. "'Cheap Thrills' is like her take on an Ace of Base song," Greg Kurstintold EW earlier this year. "On this album, I think anything is game, which is very liberating, just knowing that anything could work. There's a lot of songs on here that we maybe would not have put on the last album." 

This is Acting is available for purchase on iTunes now.