The form of this bracelet is that of a moebius strip.  Both inside and outside surfaces are carved with music staffs and quote a unique melody by J. S. Bach that is played both forwards and exactly backwards (retrograde motion).  All of the notes line up side for side, and those lasting two beats (half notes) are drilled right through.  Although the moebius shape turns the "page" upsidedown, the melody within its staff itself remains right side up.