Hugo Loos, a Belgian engineer then based in Singapore, volunteered his services as both organist and repairman. Driven by his passion and love for pipe organs, he was able to render minor repairs but much work was still required. Towards the end of 1983, the then rector of the cathedral, Father Robert Balhetchet, was introduced to Robert Navaratnam, an organ builder who had been trained in Germany. Navaratnam spent the next few decades caring for, and expanding the instrument by adding ranks of pipes where they became available. He continues to look after the organ, tuning it on a regular basis.