Highs in the Mid-Sixties, Volume 20 is a compilation album in the Highs in the Mid-Sixties series; it is subtitled L.A., Part 4 and features recordings that were released in Los Angeles. Highs in the Mid-Sixties, Volume 1, Highs in the Mid-Sixties, Volume 2, and Highs in the Mid-Sixties, Volume 3 also showcase music from Los Angeles; while two of the later CDs in the Pebbles series, Pebbles, Volume 8 and Pebbles, Volume 9 feature bands from throughout Southern California.