Diocesan School Old Boys' Association (DSOBA) Orchestra is a group of enthusiastic musicians who are the alumni of Diocesan Boys' School (DBS). We started in 2012 with our debut string orchestra performance at the DSOBA Annual Dinner. Since then, we have been an active participant in major school music events, such as the DBS Homecoming Concert and DBS Music Camp.

We have professional and non-professional musicians among us, tied together by a common passion in music. Our members range from players in the HK Philharmonic and HK Sinfonietta, conductor at DBS, music teachers, to amateur players in a variety of occupations. On some occasions we partner with choirs, such as the DSOBA Choir, Diocesan Old Girls' Association Choir, and the Heep Yunn Old Girls' Association Choir.

拔萃男書院舊生樂團源於2012年的舊生週年晚宴，由一群熱愛音樂活動的舊生組織而成。其後亦參與過不少跟母校有關聯的不同活動，包括 Homecoming Concert 及男拔首次舉辦的音樂營。成員當中除了包括一些任職香港管弦樂團及香港小交響樂團的職業樂手外，還有不少已投身社會不同行業但對音樂還充滿熱誠的人仕。過往亦曾與男拔舊生合唱團、女拔舊生合唱團及協恩舊生合唱團合作演出以承傳「拔萃樂人，不死樂魂」的音樂精神。