I don't think its possible to go any deeper at this present time. This collection of tunes is waaay deeper than anything before, I mean, its got Dub legend Horace Andy toasting lyrics in the middle of the mix, stuff don't get dubber than that! ^_^
Pitched at a calm 123 BPM and nicely key mixed to the best of my abilities (and the limits of my record collection!), I'd suggest getting yourself all pleasantly relaxed and clamping some headphones on your head! I hope you enjoy it, leave a comment and let me know how you got on if you do go Deeper! ^_^
Cheers!
{ footnote: the timestamping is very approximate, I was playing with 4 decks to start with and mixing long 12 or 16 bar blends, the starts could have been anywhere! ^_^ }