John Denver was an American singer-songwriter known for his folk and country-pop music in the mid-20th century. His distinctive sound, characterized by an acoustic guitar and his clear, expressive vocals, resonated with a broad audience, making him one of the bestselling artists of his time. Denver's music, such as his hit songs "Take Me Home, Country Roads", "Rocky Mountain High", and "Sunshine on My Shoulders", often reflected his love of nature and his environmental activism. His significant impact on the folk and country genres, along with his popularization of environmental themes in music, have solidified his place in music history.