Fans of Taylor Swift who were chanting “more!” after the release of The Life of a Showgirl’s 12 tracks on Friday (Oct. 3) received an exciting surprise on Saturday night (Oct. 4). Swift released four new CD variants of her latest album, each containing two acoustic tracks not available on the standard version of Showgirl.

Now available in “limited quantities” on Swift’s official webstore, the CDs are described as having “brand new production by Max Martin, Shellback and Taylor Swift and newly recorded vocals by Taylor Swift.”

Fans can order the limited-release CDs over a 24-hour period, through 7 p.m. ET Sunday — “while supplies last.” Each CD is priced at $7.99 and features cover art that’s different from that on the standard release. (Those who attended a screening of The Release Party of a Showgirl in movie theaters this weekend will recognize the imagery.)

“File this under ‘save your best for the finale’… I think my favorite moments from the tour were the acoustic surprises. So I went back into the studio with Max and Shellback to record acoustic/unplugged versions of a few of the Showgirl songs with brand new vocals and production! Cannot WAIT for you to hear,” Swift wrote in an Instagram post promoting the CDs.

For those who share Swift’s love of acoustic versions of songs, here’s the breakdown of the four new The Life of a Showgirl options and what’s available on them (beyond the set’s original tracklist):

• Life Is a Song Acoustic Version with “Opalite (Life Is a Song Acoustic Version)” and “Ruin the Friendship (My Advice Version)”
• Dressing Room Rehearsal Version with “Wi$h Li$t (Settled Down Acoustic Version)” and “The Life of a Showgirl (Dressing Room Rehearsal Acoustic Version)”
• Alone in My Tower Acoustic Version with “The Fate of Ophelia (Alone in My Tower Acoustic Version)” and “Eldest Daughter (Now You’re Home Acoustic Version)”
• So Glamorous Cabaret Version with “Elizabeth Taylor (So Glamorous Cabaret Version)” and Elizabeth Taylor (Original Songwriting Voice Memo)

As Billboard revealed earlier on Saturday, initial first-day sales reports from data tracking firm Luminate indicate that Swift sold 2.7 million copies in traditional album sales (physical and digital purchases) across all versions of the The Life of a Showgirl album available on its first day of release, Oct. 3. This means that in its first day alone, Showgirl has already seen the second-largest sales week for an album in the modern era — since Luminate began electronically tracking data in 1991. Only Adele has tracked a larger sales week since then, with 3.378 million copies of 25 sold within the first week of its release in 2015.