MLC Barbershop have performed at a wide range of venues, festivals and competitions in Europe and Australia. They are silver medalists from the 2014 World Choir Games in Riga, Latvia and have competed at the Llangollen Eistedfodd in Wales, Summa cum laude festival in Vienna and World Choir Games Grand Prix in Graz. In 2017 the MLC Barbershop were placed sixth in the Sweet Adelines International Young Women In Harmony Video Chorus Contest in competition with ensembles from all over the world. In 2017, MLC Barbershop were awarded a Silver Diploma at the Leonardo da Vinci Choral Competition in Florence. They are regular award winners at West Australian eisteddfods.
Barbershop quartets often perform from within the main ensemble. In 2016, one of those quartets performed at the Rising Stars Competition of the Sweet Adelines International in Auckland, New Zealand, placing 6th in the Under 25-years Pan Pacific Competition.
MLC Barbershop is directed by Carole Macintyre. She is a prominent figure in Barbershop in Australia and was the 2016 recipient of the Sweet Adelines International Ann Gooch Award for her outstanding contribution to and achievement in barbershop harmony singing.