Lotusflow3r was a late career masterpiece that sadly went by without much recognition. A genuinely well put together album unlike Planet Earth or 3121 which were more collections of songs. Prince spent a long time on Lotus working on the tracklist, and the mixing and mastering was spot on. Boom and Dreamer sound absolutely mental through big bassy speakers. Some of the guitar work is insane on that album. Highly recommend to anyone who hasn't listened, it's a really tight album.
I think something happened behind the scenes though as after April 09 he sort of disappeared and stopped promoting it. Came back in the summer for a handful of shows then went again. Shame, with proper promotion and a big tour it could have been a really big album for him and Crimson and Clover might have done well, it had a nice (online released) video.