Because of the unusual and stirring "waves" in his voice, he was given the nickname Dalgas ("Νταλγκάς" which means "passion" in Greek, and "ripple" in Turkish), by which he would be known for the rest of his professional career.

His vocal abilities were unprecedented, and as a result of his talent he emerged as one of the most lauded of his era, alongside other "manes" performers like Costas Nouri and Vangeli Sofroniou.

After 1933, he stopped appearing as a musician, and largely disappeared from recording, preferring live performances in exclusive venues, and focusing on a lighter genre of popular romantic songs.

From 1937 to 1939, Dalgas made a brief reappearance in the music industry as a composer, recording a small number of songs, and he continued to perform until 1941.

With the arrival of the Germans in Athens, however, Dalgas sunk into a deep depression, and he eventually died under mysterious circumstances in early 1945.