Abstract: A method of deriving information from an audio track, or a part thereof, wherein onsets or intensity/amplitude variations are detected as well as at which frequencies (timbral frequencies) or in which frequency bands these occur. Especially interesting is the frequency of such onsets. In this manner, the frequency of beats of a low frequency drum may be separated from that of onsets of a higher frequency drum or guitar of other instrument, and these frequencies provide important information about the track, such as genre, beat, etc. Naturally, parameters may be provided relating to the individual frequencies (frequency of onsets and frequency/tone of the sound of the onsets), or a fit thereto may be used to reduce the number of parameters. It is noted that the frequencies in which the onsets are determined may be tones or half tones in the relevant scale.