In what she believes to be a first for Aotearoa, violinist Anne Loeser is about to play the entire cycle of Heinrich Biber's 17th century Rosary Sonatas for violin and continuo.. It's such a marathon, she'll be playing it over three evenings. Anne is a first violinist in the NZSO, but she also plays baroque violin, which is what she'll be using for the marathon event. Two other musicians will be performing with Anne and she'll also need a dedicated violin-tech backstage, because every sonata demands that the violin be re-tuned and even mistuned. Lynn Freeman asked Anne why playing the full cycle is such a daunting prospect for a violinist: The performance of Heinrich Biber's Rosary Sonatas for violin and continuo at St Mary's of the Angels in Wellington, starts on Wednesday, continuing on Good Friday and Easter Sunday.