Thought Sphere is a progressive metal band influenced by bands like Fates Warning, Queensrÿche, Dream Theater, Sanctuary and many others, formed around 1996, released four albums during its existence that ended in 2002: 1997: Grailkeeper's Gate 1998: Eden's Shore 2000: Vague Horizons 2002: Eos In 2023 - a good 20 years later the band released a 'Best of' that you can find in the discography.