"Long Red" is a song recorded by Leslie West for his first solo album Mountain (1969).
[4] The 24-second drum intro from Mountain's performance of the song at Woodstock in 1969 has been sampled over 700 times,[5] particularly the clips of West shouting "You out there?
West's energetic ad-libs and drummer N. D. Smart's improvised beat have been used by countless producers such as Pete Rock, Kanye West, Rick Rubin, and J Dilla,[3][5] with Dilla creating the track "Stepson of the Clapper" off his 2006 album Donuts exclusively from samples of the intro.
When asked about the song's popularity in sampling in a 2014 interview with Glide Magazine, West said, "we have great publisher at Universal who gives the OK when people call for clearance to use it.
"[7] Pitchfork listed the sample as one of the "well-used building block [sic] that every sample-based producer should know their way around", mentioning it alongside other famous samples such as Malcolm McLaren and the World's Famous Supreme Team's "Buffalo Gals" and Beastie Boys' "The New Style".