Long ago, the music industry decreed that no band should make more than one album every two years, and no album should exceed ten to 12 tracks, unless said tracks were very short, in which case, up to 14 were acceptable. That is, if you’re playing along at home, one new song every two months, tops, with penalties for overachievement. But then the music industry died, and here we are. Ryan Walsh, for the last couple of decades the chief creative force behind Hallelujah the Hills, presents a four-part concept album with 52 songs, featuring his core band plus an assortment of New England musical legends. It’s too much to absorb to in one sitting or one day or maybe even one week, given the knotty lyrics and well-constructed melodies, but Walsh is okay with that.