On 24th March 1932, the newly formed Bury St Edmunds Bach Choir joined forces with the Bach Choir of Ipswich to perform its first concert - Bach's St Matthew Passion - in St Mary's Church, Bury St Edmunds. Percy Hallam, the founder and conductor of the choir, had recruited the choir members from the best singers in the Musical Society. Percy Hallam was the organist at St Mary's at that time although he was later to become Cathedral organist.
The Soloists for that inaugural concert were: Mabel Richie – Soprano; Tessa Richardson – Contralto; Geoffrey Dunn – Tenor; and Frederick Woodhouse – Bass. Mabel Richie, Geoffrey Dunn and Frederick Woodhouse all performed in Intimate Opera around the country, working with Percy Hallam and performing at the Athenaeum when in the Bury St Edmunds area. Mabel Richie (as Margaret Richie) was well known in Oratorio and as a recitalist, who in her retirement turned to teaching and held a Summer School in Oxford for a number of years.
Each of the Soloists was paid five guineas and the organist Mr. G. C. Gray received four guineas. The Bury members of the Choir paid seven shillings to provide refreshments for their colleagues from Ipswich, and they also made donations to the Cathedral staff amounting to three pounds two shillings. The income from the audience of slightly less than three hundred, who each paid one shilling and sixpence, failed to cover the concert expenses, and the need for sponsorship was felt from the start, if the choir was to achieve its aim of 'performing the best music in the best possible way'. A note in the concert programme thanking those who had subscribed towards the expenses 'ventured to express the hope that many more of the musical public would become regular patrons' – a hope that is still with the Choir today.
Percy Hallam rehearsed both choirs separately for a number of years, combining them for all of their major concerts performed in Bury or at St. Mary-le-Tower in Ipswich. The combined choirs also performed several times at Ely Cathedral. All of these early concerts were given with organ accompaniment until in 1935, as a result of their growing reputation, the combined choirs were invited to sing the St. Matthew Passion at St Martin-in-the-Fields as part of the celebration of the 250th anniversary of the birth of Bach, where they were accompanied by an orchestra for the first time. This performance was said to be "the first appearance of this kind of any East Anglian choir in London". The performance was deemed by the press to be "Entirely worthy of what Sir Edward Elgar called the noblest sacred work in existence".
For some fifteen years, the choirs confined themselves almost exclusively to Bach's St John and St Matthew Passions, the Mass in B minor, and Handel's Messiah, with five performances of Brahms's Requiem by the Bury Bach Choir on its own. In 1948 the mould began to break, when in a joint concert in Ipswich, the choirs performed Britten's Rejoice in the Lamb and Brahms's Song of Destiny under the baton of Reginald Jacques with the Jaques orchestra. Thereafter, their repertoire continued to expand with works by Brahms, Britten, Holst, Mozart and Vaughan Williams, and in 1951 Sir Peter Pears sang - the first of many appearances with the choirs - in a performance of Britten's St Nicolas.
In April 1957, Percy Hallam conducted the combined choirs in a performance of the Mass in B minor with the Riddick Orchestra. This was to be his last concert with the choirs, as he fell ill shortly afterwards and died in October of the same year. Percy Hallam was mourned as a fine musician and a choirmaster much loved by the singers that he had led for twenty-six years.