TRIBUTES-Pulse is a collaboration between American filmmaker Bill Morrison (b. 1965) and Danish composer and percussionist Simon Christensen (b. 1971).
Christensen originally conceived of the project as a tribute to four American composers, Charles Ives, Conlon Nancarrow, Steve Reich and Trent Reznor. The project is comprised of four movements, with the themes of Shifting (slightest change), Multiple (simultaneously different), Across (different directions) and Beat (moving synchronized) respectively corresponding to each composer.