Haiz (stylized as HΔIZ) is the debut extended play by Hailee Steinfeld and was released on November 13, 2015. Her debut and lead single from the album is Love Myself.
In 2015, Steinfeld starred as Emily Junk, in the musical comedy film Pitch Perfect 2, where she debuted her musical aspirations. She also released an acoustic cover of "Flashlight", a song featured in the film and performed by English singer Jessie J on the soundtrack. A week after the film's premiere, Steinfeld announced that she had signed a recording contract with Republic Records and planned to released a single that summer. Mattman & Robin, Captain Cuts, Harvey Mason, Jr., and The Futuristics were all named as producers for the forthcoming record; the former duo also co-wrote all four songs that ended up on the extended play. The title and release date for Haiz were revealed by Billboard on November 2, 2015. It was released on November 13, 2015.
The EP was re-released on February 26, 2016 to replace the original solo version of "Rock Bottom" with the remix featuring DNCE, with this newly recorded version serving as the record's second single. On July 15, 2016, it was re-released a second time to include the new single, "Starving", as a bonus track.
"Love Myself" was released on August 7, 2015, as the lead single from Haiz and a forthcoming full-length studio album. The song garnered media attention for its empowering message as well as suggestive lyrics that evoke masturbation. It debuted on the Billboard Pop Songs airplay chart at number 27, marking the highest debut for a solo female artist on the chart since "Torn" entered at number 26 in 1998, and eventually reached a peak position of number 15. It also peaked at number 30 on theBillboard Hot 100 and reached the top 40 on the singles charts in six other countries, including Canada, New Zealand, and Sweden.
"Rock Bottom" was released as the EP's second single on February 27, 2016, as a remix with DNCE. In the weeks prior to the EP's release, Hell Nos and Headphones was being touted as the collection's second single, but You're Such A was selected instead. Ultimately, neither song served as a single.
"Starving" was released as the EP's third single on July 22, 2016 with Grey and Zedd. The song is at the 5th place in Australia, 9th in Belgium, 11 in Norway and 39th place in Billboard's Top 40.