350970
He is very well-known for his pathbreaking collaboration with vocalist Sikkil Gurucharan , with whom his output includes 6 published albums and several national and international tours .
 Sikkil Gurucharan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sikkil Gurucharan