Samulnori Ttamtti, a Korean traditional music quartet composed of four individuals with disabilities, is celebrating its 20th anniversary with a concert titled "Ttamtti's 20-Year Journey to Fly High." The group was formed in 2003 as part of a music therapy program for disabled individuals, bringing together Ko Tae-woog, who has a developmental disorder; Park Jun-ho, who has autism; Lee Seok-hyun, who h.