#HAUSER #Hauser #Stjepan Hauser #cello #cellist #cellists #king of the cello #rebel with the cello #2Cellos #2 cellos #concert #full concert #show #classic #classical #music #gala #Classic Gala Concert #Royal Albert Hall #London #UK #England #live #Royal Philharmonic Orchestra #symphony orchestra #orchestra #Lara Fabian #Aida Garifullina #Caroline Campbell #violin #soprano #voice #singer #crossover #pop #classical music #opera #aria #strings #brass #conductor #Robert Ziegler #André Rieu #Andrea Bocelli