Original dead stock. "MU V / MU VI" released in 1984 by Michael Ranta (1942-), an American percussionist known for his collaboration with Toshi Ichiyanagi and Takehisa Kosugi on "Improvisation Sep. 1975"! This is a great album recorded and mixed at Conny Plank's Studio in 1984, featuring Mike Lewis and Conny Plank performing the masterpiece "Mu" No. 5 and No. 6.