We're already hard at work making numerous improvements to the current version of Bessie 3.0. Future improvements will hopefully include:

•A Line Segment Spectrogram

•Complex FM Synthesis and Tutorial

•Dynamic Index Control

•Detailed Interactive Sidband Calculation Windows (expanded tutorial details)

•MIDI controllable FM Synthesis Engine

Here's a screen shot of the never released Bessie 2.5 (1996) which ran on the first color 'NeXT' computer: