Mountain chiffchaff Caucasus, but interbreeding occurs rarely, if ever. The mountain chiffchaff differs from "tristis" in vocalisations, external morphology and mtDNA sequences. Its two subspecies appear to be distinct vocally, and also show some difference in mtDNA sequences. Mountain chiffchaff The mountain chiffchaff or eastern chiffchaff ("Phylloscopus sindianus") is a species of leaf warbler found in the Caucasus ("P. s. lorenzii") and Himalayas ("P. s. sindianus"), and is an altitudinal migrant, moving to lower levels in winter. The nominate subspecies is similar to the Siberian chiffchaff, but with a finer darker bill, browner upperparts and buff flanks; its song is almost identical
Does Humor Belong in Music? (video) A laserdisc version was also released in Japan, complete with Japanese subtitles for all spoken and sung material and featuring a slightly different audio mix than the VHS and DVD versions. This laserdisc version was available as a bootleg DVD from both the "Digital Underground" label (no association with the rap group of the same name) and the "Room 101" bootleg label, released a year or so before the official EMI DVD. Does Humor Belong in Music? (video) Does Humor Belong in Music? is a one-hour Frank Zappa concert video composed of live performances at The Pier in New York