By Tom Sinclair
Updated February 25, 2000 at 05:00 AM EST

Critics tend to write off the Byrds’ post-’68 work as a misbegotten dilution of their vision. That’s bull. Roger McGuinn was attempting to lead his flock beyond jingle-jangle land, and if the flights weren’t always smooth, they were occasionally breathtaking. Byrdmaniacs will appreciate (Untitled)/(Unissued)’s unreleased studio work and Live at the Filmore — February 1969, while casual fans can delight in discovering gems like ”Pale Blue” and ”Tiffany Queen” amid failed experiments Byrdmaniax and Farther Along. (Unissued): B- Byrdmaniax: B+ Farther: B Fillmore: C+