Too bad the groove is TOTALLY OFF for most of the first track - A Train, IIRC. At least on my copy. Maybe they corrected this in later pressings. The rest of the album holds together pretty well though.
The piano intro is played in 3/4. Nice variation in my book.
The bass and drums are not locked together on my copy of the record, it's like they can't hear each other, for like the first minute or so. Maybe they used a better take for subsequent pressings.