Son Seung-yeon, also known as Sonnet Son, is a South Korean singer. She is a winner of The Voice of Korea and is a frequent guest on the singing competition show Immortal Songs 2.

The Voice of Korea is a South Korean reality singing competition and local version of The Voice first broadcast as The Voice of Holland. Its first season started on February 10, 2012, on Mnet. The second and final season started on February 22, 2013, on Mnet. A reboot was announced in February 2020, and premiered on May 29, 2020.