According to the Internet source given below, Cantor and composer. Gershon Ephros was born in Serotsk, Poland.
He received his first musical training from his grandfather, Cantor Moses Fromberg and became choir leader in Zgersh aged just 17. He immigrated to Palestine 1909 and studied Hazzanuth and harmony with A.Z. Idelsohn also working as his choir director. In 1911, he moved to the U.S., where he continued his studies with Herman Spielter and Joseph Achron in New York. In 1918, he was appointed cantor of Congregation Beth El in Norfolk, Virginia, and later became cantor at Congregation Beth Elohim in New York. He settled in as cantor at Congregation Beth Mordecai of Perth Amboy, New Jersey, where he officiated from 1927 until his retirement in 1957.
Ephros composed liturgical works, in addition to other vocal and instrumental compositions. Ephros is mostly known for his publication, Cantorial Anthology, a five-volume collection of synagogue compositions for cantor and choir.
||Biography by www.jewish-music.huji.ac.il