Greg Spero

In 2014, Spero began performing with pop artist Halsey. Between 2014 and his leave in 2018, Spero designed and performed all the synthesizer and keyboard parts for her live shows, at such venues as Madison Square Garden, Allstate Arena, and The Forum. Spero and Halsey also performed on such late night TV shows as Jimmy Kimmel Live!, The Tonight Show starring Jimmy Fallon, The Today Show, and The Late Show with Steven Colbert. On January 19th 2018, Spero performed live on Saturday Night Live with Halsey. That day, he announced that he would be leaving the group to pursue his band Spirit Fingers full time, along with curating a video series called Tiny Room out of his Los Angeles studio.

In 2015, while on tour with Halsey, Spero began composing for his new project which would eventually be named Spirit Fingers. Spero accrued musicians Hadrien Feraud, Mike Mitchell, and Dario Chiazzolino to join the group. They recorded their debut record on Shanachie Records, released on March 16th 2018, and reached #11 on the iTunes Jazz charts and #20 on the Contemporary Jazz billboard charts.

His album Radio Over Miles (2010) is a combination of Miles Davis and rock band Radiohead. The album was nominated for Best Jazz Album at the Chicago Music Awards. Spero's album Live in Toronto is "sold" at a karmic price; the download is available for free in exchange for karma. "Purchasers" have to check a box agreeing to complete four karmic transactions to include giving "five random smiles to people on the street, regardless of age, sex, or looks." His album Acoustic (2011) is in a piano trio setting.

Greg Spero (born February 22, 1985) is a pianist from Highland Park, Illinois. He has toured with Halsey and the Miles Davis Electric Band and has composed music for film and television. He leads the jazz band Spirit Fingers.