He blends several genres, notably jazz, classical, pop, and world music, and languages through his songs and concerts in an attempt create a variety of unique pieces.

Kaldas studied architecture and worked for years as an underground singer, as well as an art director, graphic designer, retoucher and digital marketer.

Kaldas has developed a passion for artistic expression as early on as four years by imitating actors and actresses after watching films and plays shown on television.

After his nomination for the Peace Prize in Brussels in January 2012, and his performance in Paris afterward, Kaldas decided to live in France for some time to be able to learn new vocal techniques and start singing in different countries.

From childhood, Kaldas accepted a wide variety of musical styles, listening to radio stations from Northern Africa, Arab countries, and Europe.

He has also sung covers from Charles Aznavour, Édith Piaf, Mireille Mathieu, Frédéric François, Jacques Brel, Elvis Presley, Frank Sinatra, and Nat King Cole.