Super Junior's Siwon showed his support and family bond for his younger sister, Jiwon, for her first ever OST that's part of web drama 'Begin Now'. 

In addition to his supportive tweet that read, "my younger sister Jiwon. She involved in soundtrack this time. Enjoy. i'm so proud of you", the idol also included a capture shot of the song and a snippet of the lyrics. "Lonely Star" is a classic slow song with mellow piano and string instrumentals that shows off Jiwon's beautiful voice.

Meanwhile, the web drama 'Begin Now', a narrative of a boy in his late teens who falls in love for the first time, is set to air via Olleh TV on January 22.  You can take a listen to 'Lonely Star' above if you haven't heard it yet!