In the 1980s and beyond, electric bass was used in works by Hans Werner Henze (El Rey de Harlem, 1980; and Il ritorno dUlisse in patria, 1981), Harold Shapero, On Green Mountain (Chaconne after Monteverdi), 1957, orchestrated 1981; Alfred Schnittkes Symphony No. 3 (Schnittke) (1981); Steve Reichs Electric Counterpoint (1987) and 2x5 (Reich) (2008), Wolfgang Rihm (Die Eroberung von Mexico, 1987-91), Arvo Pärt (Miserere, 1989/92), Steve Martland (Dance works, 1993; and Horses of Instruction, 1994), Sofia Gubaidulina (Aus dem Stundenbuch, 1991), Giya Kancheli (Wingless, 1993), John Adams (composer) (I Was Looking at the Ceiling and Then I Saw the Sky, 1995; and Scratchband, 1996/97), Michael Nyman (various works for the Michael Nyman Band), Mark-Anthony Turnage (Blood on the Floor, 1993-1996), numerous works by Art Jarvinen.

Question: What works had been used by electric bass in 1981?
Answer: Il ritorno dUlisse in patria,

Question: How many years did Anthony Turnage play Blood on the Floor?
Answer: 3