Libels Party is an annual event from SMAN 15. Libels Party is also known as Liberty. Friday, 15 November 2019 SMAN 15 Surabaya held that event at the Jatim expo with Aetherealm theme. Magnificent stage, cool guest stars, and bazaar became a complete package at this school's art performance. This event was so exiciting because there were Didi Kempot, Kahitna, and Reality Club.

"Let us bring you to a different dimension, the clear sky; the upper regions of air beyond the clouds, extremely delicate and light in a way that seems too perfect for this world. Come join us because we will give you the best night ever !!". This event description was in line with expectations. Liberty 2k19 brought us to different dimension where Didi Kempot with dangdut genre, Kahitna with jazz ballads song, and Reality Club with indie music became beautiful fusion.

Not only cool guest stars but this event also showed students perfomances. There were traditional dance, Saman dance, and other performances. There were also a free photobooth that make unforgettable memories and free ice cream from Joyday that make us enjoy. The huge success of this event will encourage SMAN 15 Surabaya to make the next Liberty is better than Liberty this year