I have the 3 Platinum Disc releases which have the surviving MGM shorts, as well as some of the animated stuff and a couple Shemp solo shorts. The quality is none too good.
Nertsery Rhymes has the musical numbers still in it and to me, they make no sense whatsoever. Completely disjointed with the rest of the short. I figure musical numbers were popular at that time, and they may have had to include something musical to get on film in the beginning, but these were (I believe) scenes from another MGM musical they just shoehorned into the short, unlike Women Haters where the musical aspects were a part of the story.
Beer & Pretzels and Plane Nuts were the best 2 of the 4 I have seen (The Big Idea being the 4th). Still interesting to see this early stuff.