Simon Géza Gábor: „Csillogó fekete lemezeken…” 100 éves a magyar hanglemezgyártás és -forgalmazás (Budapest, 2008)
Their own label, Ervé, released hit records but was relatively short-lived. In the era of the CD they have developed a significant stock of re-releases, primarily easy listening pieces. More recently this label has brought out re-releases of classical works. Music dealing The golden age of vocal groups Musical productions spiced with performances by singing quartets had already achieved great success prior to the First World War. The Mocsányi-Lakos duo (Two Jazzers, also known as Laci and Tibi), Kardosch Sänger, Abel Sänger, Five Songs, the quartet Holéczy Vokálnégyes, and the vocal groups Triumpf Vokálegyüttes, and Bágya-Apor Vokálegyüttes were listed among the leading vocal performers in Europe between the two world wars. All the members and bandleaders were Hungarian. Bárd Publishing House