Subjective rhythmization is that phenomenon whereby, when one is listening to a monotone metronome sequence, some sounds are experienced as accented. These subjectively accented sounds group the sequence similarly to how the metrical structure of a piece of music groups the beats. Subjective rhythmization was first investigated by Bolton (1894); the present study aims at replicating and extending that work. Consistent with Bolton’s results, all participants reported hearing accent patterns when listening to monotone sequences; the reported group size of an accent pattern was highly dependent on the tempo of the sequence. A power relation captured well the relation between the reported group size and the sequence interstimulus interval. Further, the mean group size reported in the subjective rhythmization task was found to correlate with the timing performance in a slow-tempo tapping task. These results are consistent with the resonance theory explanation of subjective rhythmization (Large, 2008).