81453
Of equal importance is the TR-808 kick drum , an artificially pitch-downed or elongated bass drum sound sampled from Roland 's classic TR-808 drum machine , and a sound which has been subject to an enormous amount of experimentation over the years .
 Roland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Roland