Although the Hammond L-100 with its shorter manuals is considered a "poor man's" Hammond, Emerson not only played much of the early Nice music on his L-100, but also made good use of some of its unique features which his bigger Hammond C-3 does not provide. The L-100 has a self-starting motor, which - if turned off and on in short intervals - renders the whole organ into a wailing howl while the note generator, which is tied to a synchronous motor, tries to recover to pitch. The L-100 also features a spring-loaded reverb tank, which produces bomb-like noises if shaken. Both effects can be heard in abundance on "Rondo 69". On "Ars Longa Vita Brevis" Emerson even uses the reverb tank as a musical instrument, tapping the internal spring against the tank bottom in an effort to create a chromatic scale of "boings".