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Concert 4 Guest Artists

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Joel Amosa
​Bass - Baritone

Samoan bass-baritone, Joel Amosa, completed his Music Degree and Post-Graduate Diploma under the tutelage of Isabel Cunningham and Frances Wilson. In 2012 at the University of Otago. Joel began his operatic career with two leading Mozartian roles: Count Almaviva in The Marriage of Figaro with Opera Otago and Don Alfonso in Cosi fan Tutte with both The Auckland Opera Studio and Opera Hawke’s Bay. 
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Joel is an avid member of the Opera Quartet, Operanesia, who gave their first performance in 2014 to raise money for New Zealand Singing School and New Zealand Opera School tuition. 
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Joel attributes much of his singing success to Dilworth School. It was there he found a voice and a passion to pursue music to the fullest.
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Anna da Silva Chen
​Violin

Anna da Silva Chen is widely regarded as one of Australia’s leading concert violinists, known for her passion and virtuosity as a concerto soloist, chamber musician, concertmaster and director. She coleads the Alma Moodie Quartet and has been a member of the Australian Chamber Orchestra since 2024.

As a soloist, Anna has performed with many of Australia’s major orchestras including the Sydney, Adelaide, Queensland, Tasmanian and Canberra Symphony Orchestras as well as various regional, youth and community orchestras. Concerto highlights include Elgar with the ASO, Shostakovich No. 1 with Ensemble Apex and West Phil, Beethoven with CSO and Steel City Strings, Brahms with NSSO, the Butterfly Lovers’ with QSO, and Sibelius and Tchaikovsky concerti with several orchestras.

In 2024, she performed the Australian premiere of Max Reger’s 1908 Violin Concerto with Concerto Arcana. Overseas, she made her German debut in 2020 with the Göttingen Symphony Orchestra, toured Spain as a soloist with the SCM Wind Symphony Orchestra, performed several concerts and tutored chamber ensembles in the Netherlands’ 2022 Orlando Festival, and led a performance of Ligeti’s Melodien in Italy’s Chigiana International Festival 2024.

By the age of 15, Anna won Australia’s Kendall National Violin Competition (1st and Audience Choice prizes), the National Youth Concerto Competition, Fine Music FM’s Young Virtuoso Award, and was a semi-finalist in the Menuhin International Violin Competition. She went on to win the overall prize of KPO’s NSW Concerto Competition, the Sydney Conservatorium’s Concerto Competition, University of Sydney Academic Merit Prizes, the Corrina Taylor Memorial Prize and the Miss Ada Thompson Scholarship, and was a frequent finalist in the ABC Young Performers Awards. In recent years she was a laureate of the Vienna and Gisborne International Music Competitions and one of 22 violinists selected to compete in the Carl Nielsen International Competition.

Deeply motivated as a chamber musician and curator, Anna embraces complex and neglected works across many historical periods. As founding member of the Alma Moodie Quartet, she shares the dedication to the music their namesake championed — the classics as well as rarely played quartets by Schoenberg, Reger, Ligeti and Zemlinsky. She has performed as guest violinist with the Australia Ensemble, Omega Ensemble, Australia Piano Quartet, Ensemble Q, and Selby & Friends, as soloist, guest director, and concertmaster of Ensemble Apex, and as a festival artist in the Canberra International, Tasmanian, Brycefield Estate, and Newcastle Music Festivals.

​She has been privileged to perform chamber music alongside Richard Tognetti, Kristian Winther, Andrew Haveron, Julian Smiles, Shuann Chai, Daniel de Borah and Lee Dionne

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Robert Ashworth
Viola

Robert is the Prin­ci­pal viola of the Auck­land Phil­har­mo­nia, having arrived from Canada to New Zealand shores in 2003.
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He has been guest-principal viola for the Mel­bourne Sym­phony, the New Zealand Sym­phony Orches­tra and the Aus­tralian Opera and Bal­let Orches­tra, as well as assistant-principal for the Cal­gary Phil­har­monic Orches­tra.

He is vio­list with the Jade String Quar­tet in Auck­land, and also plays with the Australian World Orchestra.
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Robert is a twice recip­i­ent of the Canada Coun­cil for the Arts Award for Emerg­ing Artists and has per­formed with var­i­ous groups at inter­na­tional cham­ber music fes­ti­vals in Europe, North Amer­ica, and Japan.

​He has had the hon­our to study with vio­lists Thomas Riebl and Veronika Hagen at the Uni­ver­si­taet Mozar­teum in Salzburg, Aus­tria and with Ger­ald Stan­ick at the Uni­ver­sity of British Colum­bia in Van­cou­ver, Canada.
Concert Information
  • Home
  • About
    • The Series
    • Concert Venue
    • Food & Drink
  • Artists
    • Director Tania Frazer
    • Guest Artists 2026 >
      • Concert 1 Guests
      • Concert 2 Guests
      • Concert 3 Guests
      • Concert 4 Guests
  • Concerts
    • Concerts 2026 >
      • Concert 1
      • Concert 2
      • Concert 3
      • Concert 4
    • Waiheke Chamber Music Festival NZ
  • 2026 Brochure
  • Buy Tickets
  • Links
    • Tania Frazer Website
    • Waiheke Chamber Music Festival
    • The Thomas Dixon Centre
  • Support US
  • Contact