Enigma's 2005 compilation '15 Years After' features the track 'Silence Must Be Heard,' a definitive example of their signature blend of electronic production and ethereal vocals. The song exemplifies the group's ability to merge ambient textures with rhythmic complexity, creating an immersive soundscape that defined the New Age and trance genres of the late 1990s and early 2000s. With its haunting melody and atmospheric build, the recording stands as a staple of Enigma's discography, capturing the essence of their mysterious and spiritual aesthetic. Released alongside other key tracks from their extensive catalog, this work continues to resonate with listeners seeking atmospheric electronic music that transcends traditional boundaries.