Among the sound of waves from Sleeping Lion's third album, "The Soundscape of Jeju Island Vol.3 - Waves in your mind," five of the most beloved sources were selected and released as NFTs. I hope it will be a time to shake off distractions and focus entirely on yourself through the sounds of various waves in Jeju, including calm waves, rough waves, and waves surrounding Yongcheon water. Secondary copyrights are allowed only for the period of collection when purchasing NFTs of the sound source.