Recorded on an ipad from a musical box played very slowly to get a single note. Then topped and tailed in audacity. I made it for use in the program sonic pi eg https://soundcloud. Com/scrbn/march-of-the-tin-soldiers-musical-box-version-played-by-sonic-pi.
Generated sound as sinusoid 852hz - 0,8db for 0,5si modified the curve of the sound at the beginning and at end. I suppressed the unmodified part of the sound and i decrease the speed gettin' us some kind of friction.