Photo of Regina Spektor by Shervin Lainez
Chance the Rapper's star-studded Coloring Book mixtape nearly included a guest feature from Regina Spektor.
The Chicago MC said Thursday on Twitter he was listening back to old demos of the songs from the mixtape, including a version of "Same Drugs" featuring Spektor.
He said not including that rendition of the song "may be my biggest mistake."
Coloring Book, which arrived on May 12, features a number of other artists, including Kanye West, Justin Bieber, Jay Electronica, Future, Kirk Franklin, Lil Wayne, Ty Dolla $ign, Jeremih and Young Thug.
Last month marked four years since the release of Spektor's last album What We Saw from the Cheap Seats, although she's performed new music since then.