A.J. Rahman's favourite themes depict the bountiful landscapes of Malaysia. A skilled watercolourist, he depicts a cluster of wooden homes in the forest interior with delicate shades of green colours. A.J. Rahman, together with A.B. Ibrahim and Saidin Yahaya, form a group named Tiga Serangkai which is the starting of the art history in Kedah. In 1946, the trio opened up their art studio called Warna Art Studio located in Pekan Rabu, Alor Setar. Besides being an artist, A.J. Rahman is also a school teacher.