Binding theories postulate short-term associations between stimulus and response features, which are stored in temporary episodic traces called event files. If any of the features in an event file is repeated, the entire event file, including the response, is retrieved, thus influencing future responding. In general, these short-term bindings have often been observed to be binary in nature, that is, bindings between two features, but not more. In the present study, evidence for more complex bindings was tested with auditory distractor stimuli. Participants responded to a coloured geometric form, while simultaneously being presented with the irrelevant sound of musical instruments in either a high or low frequency. The results indicated a significant higher-order interaction between the response, musical instrument, and tone frequency. In order to exclude the alternative explanation that the unique timbre of the musical instrument was responsible for the interaction, a second study using tone frequency and tone length as distractors was conducted. Preliminary results indicate, once again, a significant higher-order interaction. These results are discussed in the context of binding structures within event files.