Sostenes Alfonsos, born in 1984, currently living in Yogyakarta since 1999. Active DJing since 2007 started in back2back format called Mystical Soundsystem & Involve in many DIY and DIWO party movement around Jakarta – Jogja – Bali. He is one of member ENERGYROOM the underground party crew movement in Yogyakata since 2004. He also involve in the youth culture movement and art collective around Yogyakarta. Joining the Kingdom Of Rebel (KOR) collective curated by House Of Natural Fiber since 2013 and doing some project and tour to Manila, Tokyo and South Korea. Sostenes Alfonsos also one of the founder Happy Swinging and 480Minutes outdoor party gather in Yogyakarta. Now Sostenes Alfonsos still DJing in unique musical selections and keep pushing underground movement a.k.a CASUAL DANCE.