|8 is the first studio album by Madhouse, and was released in January, 1987.
All eight tracks were written or co-written by Prince, and all contain him playing most instruments, with Eric Leeds playing saxophone and flute. All tracks are given written numerical names, from One to Eight, while the album is named numerically. The album is the first instrumental album released by Prince under any name.
The album's credits state that the album was recorded at "Madhouse Studios", Pittsburgh, PA, USA (to go along with the pretense that this was a project Eric Leeds recorded with his previous band), but in fact the whole album was recorded over the course of four days (28 September - 1 October, 1986) at Prince's Galpin Blvd Home Studio, Chanhassen, MN, USA.
The album produced one single, 6. It reached only number 107 on the Billboard Top Pop Albums Chart, and number 25 on the Billboard Top Black Albums Chart.