Dan - I don't want to stop you from buying the EZKeys Midi Packs... but... understand, they don't do "soloing". They are generally rhythm phrases... they are very well played - they sound great - and they give you flexibility for different sections... intro, verse, prechorus, chorus outro, etc... generally BIAB pianos have 2 modes (A vs. B), so there is added flexibility.. At a "price" of having to build them yourself (it is not hard, but takes more time than clicking on an RT piano rhythm...)