HAUSER and Señorita – All I Want For Christmas Is You

Hauser is a Croatian cellist. He is a member of 2Cellos, along with Luka Šulić.

His career extends into many collaborations and crossover with some of today’s most popular musicians and singers.
And, who is the mysterious female performing
… Recently, Hauserhas been teaming up with his Italian partner,

Benedetta Caretta, who during performances is so wrapped in her partner’s arms, as she sings. Wiki