Glissonic

Glissotar is the first member of the Glissonic instrument family, designed to give wind players unprecedented flexibility with glissando. With a magnetic strap instead of keys, the Glissotar gives its user a vast range of new playing possibilities.
It is based on the soprano saxophone. Its range is 2.5 octaves, it has two octave keys, and it can be used with a soprano saxophone mouthpiece.