Alternative rock bass guitarists

Michael Edward Mills (born December 17, 1958) is an American multi-instrumentalist, singer, and composer who was a founding member of the alternative rock band R.E.M. Though known primarily as the bass guitarist and backing vocalist of R.E.M., his musical repertoire also includes keyboards and occasional lead vocals. He contributed to a majority of the band's musical compositions and is the only member to have had formal musical training.

Robin Andrew Guthrie (born 4 January 1962) is a Scottish musician, songwriter, composer, record producer and audio engineer, best known as the co-founder of the alternative rock band Cocteau Twins. During his career Guthrie has performed guitar, bass guitar, keyboards, drums and other musical instruments, in addition to programming, sampling and sound processing.