  In this paper a new method for information hiding in club music is
introduced. The method called StegIbiza is based on using the music tempo as a
carrier. The tempo is modulated by hidden messages with a 3-value coding
scheme, which is an adoption of Morse code for StegIbiza. The evaluation of the
system was performed for several music samples (with and without StegIbiza
enabled) on a selected group of testers who had a music background. Finally,
for the worst case scenario, none of them could identify any differences in the
audio with a 1% margin of changed tempo.
