I replied to a fellow who basically implied the same question I've been asked before - "Is the Pico just a stepping stone, or gateway, to a Tau (or Alpha)?". In my opinion, for the serious musician, it is most definitely.
To use the harmonica reference, one can play tunes on a small version, and it can be carried in the back pocket, but a larger, chromatic model in the hands of a serious musician leads to some amazing possibilities.
I don't see any serious music, aside from a couple pieces Kayla has done, recorded using the Pico. But I do see good representation of multiple styles of music played on the Alpha.
This, to me, draws a meaningful conclusion.
Frankly, I don't see why Eigenlabs has the Pico in the lineup. A better starting point really is the Tau, as it offers all aspects of the Eigenharp experience, i.e.: keygrounps, arranger, an appropriate number of keys which allow for many possibilities.
The Pico is limited in so many ways. 16 keys, only slightly more than on octave on a chromatic scale. It's kinda twitchy to hold stable while playing. More, but you get the point.
Best,
Randy