Pale crag martin to do so, it would cast doubts on their specific distinctness. There are several subspecies differing in plumage shade or size, although the differences are clinal, and races interbreed where their ranges meet. The pale crag martin of the nominate subspecies "P. o. obsoleta" is 12–13 cm (4.7–5.1 in) long with light brown upperparts, becoming paler on the lower back, and a short square tail that has small white patches near the tips of all but the central and outermost pairs of feathers. It has a pale grey throat, upper breast and underwing coverts, and the rest of the underparts
A Whiter Shade of Pale keyboard. The final instrumental fades out to silence – a common device in pop music of the time. A BBC Radio 4 programme in the 2018 series “Soul Music” pointed out the resemblance between the Hammond Organ line of “A Whiter Shade of Pale” and J.S.Bach’s Air from his Orchestral Suite No. 3 BWV1068, (the “Air on the G string”) where the sustained opening note of the main melodic line flowers into a free-flowing melody against a descending bass line: Allan Moore notes “a certain family resemblance” that “creates the sense of [Bach’s] music without actually quoting it.” The similarity