Recent progress in attention research suggests that the deployment of auditory attention resources is not stable, but oscillates at around 8 Hz in time. The present study investigated the deployment of auditory attention resources around a keypress. In experiment 1, a threshold-titrated tone was presented binaurally around the time of a voluntary keypress from the participants. Through the technique of behavioural dense sampling, we found that the tone detection rate oscillated at around 7 Hz following the keypress, but not before the keypress. In experiment 2, we asked participants to pay attention to one ear and ignore the other ear. However, threshold-titrated monaural tones could be presented to both ears for detection after a voluntary keypress. Results showed that the detection rate oscillated at around 7 Hz for the unattended ear but not the attended ear. Our results indicate that auditory attention oscillates at around 7 Hz. However, the oscillatory pattern in auditory attention may only be observed when the overall level of attention resources is not very high.