*Sneaks in, hopefully unnoticed, and makes her way to the CD player. Quickly and with ease she presses 'stop', 'eject', places a CD from her bag into place and presses 'play'.
This whole procedure is rather swift and done as if she's done it thousands of times before.
Volume is hastily turned up and soon enough the sound of David Bowie's unmistakable voice reverberates through the setting in full blown song.*
*simply leans back on a sort of happy keel and looks rather proud of herself; waiting for people to start complaining*