By Syndicated Content Grohl: Ebet Roberts/Redferns/Getty Images; Post: Tim Mosenfelder/Getty Images Coming across a YouTube post of her own isolated backup vocals on Foo Fightersâ classic âEverlongâ has sent Veruca Saltâs Louise Post down a rabbit hole â leading her to reminisce about the recording of the song, which Dave Grohl wrote about their then-romance. Posting a snippet of that isolated recording on Instagram, Post wrote, âI sang these back-ups over the phone at 2am after being woken up from a deep sleep in Chicago by [Dave Grohl] who was tracking the vocals for âEverlongâ in LA.â