While the drum is central to pow wows, "the drum only helps them keep beat. Dancers key on the melody of the song. Rhythms, tones, pitch all help create their 'moves'." (p. 85) Note that Bill Runs Above did not mention the lyrics of the songs, and while they are no doubt important, most lyrics of most songs employ vocables, syllable sounds such as "ya", "hey", and "loi" (p. 86). This is particularly evident in intertribal songs, such as the AIM Song, which cannot be biased towards a certain language.