What genre of music  did Loudest Whisper debut on a vinyl record format characterized by a speed of 33 ⁄ rpm, a 12 or 10 inch (30 or 25 cm) diameter, and use of the "microgroove" groove specification?
LP record The LP (from "long playing" or "long play") is an analog sound storage medium, a vinyl record format characterized by a speed of 33 ⁄ rpm, a 12 or 10 inch (30 or 25 cm) diameter, and use of the "microgroove" groove specification. Introduced by Columbia in 1948, it was soon adopted as a new standard by the entire record industry. Apart from a few relatively minor refinements and the important later addition of stereophonic sound, it has remained the standard format for vinyl albums.
Beatbeat Whisper Beatbeat Whisper is an American indie folk band from the San Francisco Bay area in California, and has gained notoriety on both coasts of the United States. The band is composed of sibling singer-songwriters, Ayla Nereo and Davyd Nereo. Their music has been described as "folk-based music touched with chords of bluegrass, traditional folksongs, dancy rock ballads, classical piano sonatas, and pirate shanties."