Rabbi Frances Lyon Cohen (aka FLC)
He was the Rabbi of the Great Synagogue, Sydney, NSW, Australia from 1905 until his death in 1934. Born in England in 1862, he was the minister at the Borough New Synagogue, London from 1886-1904 (he received s'micha in 1905). His wife's father was the great chazan Rev. Marcus Hast. There is an article about F.L.Cohen in the Encyclopaedia Judaica.
He was also the first co-editor of "The Voice of Prayer and Praise" (aka, The Blue Book). FLC edited the pre-cursor to this publication which was called "The Handbook of Synagogue Music for Congregational Singing" which was published in 1889. This publication was funded by Lady Rothschild.