The Ghost of a Saber Tooth Tiger is an American-British band formed in 2008 by Sean Ono Lennon and Charlotte Kemp Muhl.

Years in development and previewed first on NPR's First Listen,[8] Midnight Sun was released on April 29, 2014 on Chimera Music and received strong critical response.

[9] “Midnight Sun positively slays,” NME's Jeremy Allen opined[10] in his 8/10 review, summarizing: “Midnight scorchio, more like.” Gregory Heaney’s four-out-of-five-star review in Allmusic[11] read: “With its eclectic instrumentation and crunchy production (mixed by the master himself, Dave Fridmann), Lennon and Muhl create a musical landscape where seemingly anything can happen.” And Luke O'Neil in the Boston Globe[12] described Midnight Sun as “an accomplished, enjoyable record from start to finish, regardless of references or lineage.” Other reviews include: A substantially more electrified album than their previous efforts but with a wide range of styles within its dozen songs, Midnight Sun is a unique, diverse album that is both retro and forward leaning, with clear psychedelic rock and neo-psychedelia influences that fans and critics have pointed to including the Beatles during their pre- and post–Sgt.

Pepper's Lonely Hearts Club Band period, the Rolling Stones' Their Satanic Majesties Request, Pink Floyd, Led Zeppelin, and, because of their harmonies, the Beach Boys, as well as contemporary artists such as Beck, Flaming Lips and Tame Impala.

[17] In an interview with the Boston Herald in June 2014, Lennon stated, "It’s easy to hear influences like the Beatles and Pink Floyd, but honestly we’re inspired by more than what you’d expect.

We brought in Dave Fridmann (Tame Impala, Flaming Lips, Mercury Rev, MGMT) to mix it and that made a huge difference.

Just after the release of the album, The GOASTT embarked on a tour[26] of twenty-seven venues in the U.S. and Canada beginning May 2 and running to the Mountain Jam Festival in Hunter, NY on June 8, 2014.

In addition to Lennon and Kemp Muhl, The GOASTT road band includes members of the Brooklyn-based Invisible Familiars,[27] with drummer Tim Kuhl, Jared Samuel on keyboards, and Robbie Mangano on guitars.

Review of the Denver Concert: [28] “Teetering between a darkly groovy psych vibe to ’70s funk to Brian Wilson-inspired vocal harmonies, the band covered a wide range of sonic territory...Lennon closed with a gorgeous rendition of the Hendrix classic 'Little Wing' that sent the exuberant crowd out into warm summer night with big smiles."

GOASTT often finished their sets with the Syd Barrett tune "Long Gone"[29] S. Victor Aaron in Something Else Reviews[30] wrote: "The Ghost of A Saber Tooth Tiger brings the full band to bear on the song, busting out of the tune’s seams with heavy tones from guitars, Muhl’s organ and Tim Kuhl’s discriminating drums as the song descends into the metal bombast waiting at the end the chorus."

The Ghost of a Saber Tooth Tiger played a benefit concert in August 2010, with all the proceeds going to support the Woodstock Animal Sanctuary in New York.