Abstract: A self-service terminal (SST) and a method of operating the SST are described. The SST comprises a control application arranged to control operation of the SST. The control application is operable to play a first musical sequence on execution of an initial event at the terminal. The first musical sequence may comprise an arrangement of musical notes that serves as an audible indicator associated with a manufacturer of that terminal. A method of identifying a manufacturer of an SST by means of an audible indicator during a transaction at the SST is also described.