group that fused rock, funk, and jazz. Cobham toured extensively from 1971 to 1973 with the Mahavishnu Orchestra, which released two studio albums, The Inner Mounting Flame (1971) and Birds of Fire (1973), and one live album, Between Nothingness & Eternity (1973). The studio versions of songs on the live album were released on The Lost Trident Sessions (1999). Cobham's debut album, Spectrum (1973), surprised him and his record company when it reached No. 1 on the Billboard magazine Jazz Albums chart and No. 26 on the Top 200 Albums chart. Cobham started experimenting with different drum equipment. In 1974 for Crosswinds he used a fiberglass shell snare built for him by Al Duffy, and used Duffy's custom chain-drive bass drum pedal. Cobham's massive drum kit in the mid-1970s, based on a clear acrylic set by Fibes Drums, contained two Fibes bass drums, a custom Duffy snare, two flared-shell rack toms by North Drums, four Fibes rack toms, two Fibes floor toms, two gong drums by Duffy customized by Cobham's drum roadie Jeff Ocheltree, a hi-hat, five Zildjian cymbals, and one hanging 36-inch gong. This expansive kit and Cobham's dynamic style influenced later drummers. In 1980, he worked with Jack Bruce in Jack Bruce & Friends. For this group, Cobham used a very large custom drum kit designed for him by Tama Drums, featuring three bass drums with linked pedals, and three snares including a piccolo snare and a Hinger Space Tone expanding snare. Cobham said this kit adapted to fit the music, and the music adapted to fit the kit – "a continual chicken–egg–chicken scenario." On October 30, 1980, he joined the Grateful Dead during the band's concert at Radio City Music Hall. He performed a long drum solo session with the band's two percussionists, Bill Kreutzmann and Mickey Hart, also known as the Rhythm Devils. In 1981, Billy Cobham's Glass Menagerie was formed with Michał Urbaniak on violin and EWI, Gil Goldstein on piano, Tim Landers on bass, and Mike Stern on guitar. Dean Brown replaced Stern when he left to play with Miles Davis. Glass Menagerie released two albums for Elektra Musician. In 1984, he played in the band Bobby and the Midnites, a side project for Bob Weir of the Grateful Dead, with Bobby Cochran and Kenny Gradney, and recorded the album Where the Beat Meets the Street. Cobham moved to Switzerland in 1985. In 1994,