This special 6-pack CD set includes both classical and ambient segments of the Breatheasy series. The classical segment includes over 200 minutes of music, featuring masterpieces from the masters including Bach, Beethoven, Mozart and many, many more. The ambient segment features Silencio Music, one of the top names in relaxation and meditation music. The set is designed to allow the user's heartbeat to actually slow and synchronize with the music to produce the ultimate in relaxation. For this reason it is ideal for use with slow breathing.