Louis Arens was an opera singer and tenor of Jewish origin. The article gives his birth year as either 1864 or 1865. Its infobox lists Riga as his birthplace, while the biographical text names Mitau.
He studied at the Riga Gymnasium and later at the Imperial Moscow Conservatory under Pyotr Ilyich Tchaikovsky, graduating in 1890. He sang at Moscow’s Imperial Bolshoi Theatre and in opera houses in Berlin, Milan, Naples, and Turin. In 1894 he appeared at the Royal Opera House, Covent Garden, in London, where he later gave many concerts. In the early 20th century, he was a soloist at the City Theatre in Regensburg.
Arens wrote the children’s pantomime The Quartet for orchestra and the song Die Erinnerung for tenor.