Proper noun
Brill Building
(music, historical, attributive) A style of pop music of the early 1960s, written by teams of professional songwriters to be performed by girl groups and teen idols.
Not getting much interest from his usual stable of Brill Building writers, Kirshner assigned Tommy Boyce and Bobby Hart to the project. Source: Internet
On the surface, it’s a jangly slice of AM-radio pop, packed with barbed melodic hooks and based on the classic Brill Building trope of the idealized dream lover as substitute for the unrequited real thing. Source: Internet