Belated Congratulations on the album!
I especially enjoy "My way or..." night version, it has a very smooth and relaxed flow. The jerkiness during a lot of the songs stood out and definately threw off the whole groove for the album. Listening to it more indepth brought to mind a lot of minor tweaks for the lead sounds, mainly cohesion of various riffs and (pardon my lack of musical terminology) the lack of blend.
I believe the terms are leggato and steccato, steccato being detatched notes, and leggato being smoothly played together. Your choice of tracks for the (assuming) "day" songs are too stiff sounding and feel forced like you're trying to account for every note of the original source. However, the choice of tracks for your "night" verisions blend very well and set an excellent mood. The out-of-rhythm notes are more easily covered up and less noticeable due to their being more fluid and willing to blend.
Apologies if I sound like a pompus music critic with an overinflated view of himself and air of self-importance, but I just wanted to let you know of my thoughts for possible improvement.
My only suggestion would be a more involved bassline; some basic scales and "walks" would fit nicely.
It works in my head anyhow...
