This paper presents a method for voice percussion recognition and its application to drum pattern retrieval. Recognition of voice percussion (verbalized expression of drum sound by voice) requires an approach that is different from existing methods. Individual differences in both vocal characteristics and the kinds of verbal expressions used add further complication to the task. The approach taken in this study uses onomatopoeia as internal representation of drum sounds, and combines the recognition of voice percussion with the retrieval of intended drum patterns. This scheme is intended to deal with the two types of individual differences mentioned above. In a recognition experiment with 200 utterances of voice percussion, our