A submersible well pump assembly has a rotary pump, a motor, and a seal section coupled between the motor and the pump. Clickstream data is received and compared to a purchase history. Following the ALD process, an oxidizing anneal process is applied in a manner is hot enough to heal defects in the TiO2 dielectric and reduce interface states between TiO2 and electrode; the anneal temperature is selected so as to not be so hot as to disrupt BEL surface roughness. Variability occurs during playback per the artist’s composition data set, which specifies the spawning of group from a snippet, the selection of a snippet from each group, editing of snippets, flexible and variable placement of snippets, and the mixing of multiple snippets to generate each time sample in a channel. The magnitude of the perturbation is such that at least some of the trapped ions have an absolute phase spread of more than zero but less than about 2\u03c0 radians over an ion detection period Tm.