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?
The Children of Lir (Loudest Whisper album) The Children of Lir is the debut album by Irish folk rock/progressive folk group Loudest Whisper. It is the studio adaption of the musical of the same name that was performed in Fermoy, Ireland in 1973. The album was released on LP record in Ireland by Polydor Records in 1974 in a limited edition of 500 copies.
PocketDisc Pocket Disc was a type of flexidisc, made by Americom Corporation and experimented with in the late 1960s by 28 major record labels, (but some major labels such as Columbia Records, RCA Records, Motown Records, and MCA Records chose not to participate) and included popular artists of the era such as The Beatles, Aretha Franklin, The Beach Boys, Steppenwolf and Jimi Hendrix, that were small enough (four inches in diameter) to be carried in one's pocket or shipped in an envelope and not be as fragile as a standard record, but could still be played on the standard manual-only phonograph or record player (at 45 RPM).