*"Bravo. Such beautiful, sensitive writing..."*
Eric Whitacre [regarding
Love and O Virgo Splendens*]

Gareth composes chiefly sacred choral works, which have been performed and recorded globally. A Song Was Heard at Christmas and Blessed be that Maid Marie were recorded by the BBC Singers and subsequently broadcast on BBC Radio 3. These works, alongside several others, have since been published by Boosey and Hawkes, Hal Leonard and the RSCM.

Come, And Let Us Return to the Lord, published by Stainer & Bell, was commissioned by London's Temple Church Choir and featured in their Ash Wednesday Choral Evensong broadcast live on BBC Radio 3 in 2020. Temple Church Choir subsequently commissioned and premiered the Treseder Missa Brevis for Trebles or Sopranos and Organ. Gareth's self-penned Bethle'm Baby was published by Boosey & Hawkes in the same year. The Minney Singers, with whom Gareth also sang, premiered his arrangement of Suo Gân and the SATB variant of Holy Night, Blessed Night in their "Carols in the Garden" Christmas concert while raising money for Help Musicians UK. The SSAT original version was previously premiered by The Nonsuch Singers. In 2021, a new setting of the Coventry Carol was written to raise funds for the Motor Neurone Disease Association through the @MNDArtChallenge initiative.

Upcoming premieres include Jesu, Joy Of Man's Desiring, written for Sonoro's Choral Inspirations 2 project in 2021; Righteousness and Equity written for Temple Church Choir.

Note: for concert programmes, please do contact Gareth Treseder for an updated and/or shortened biography.