The director of surrealist clothier Imaginary Foundation sent me this link to three Dada audio pieces. My favorite is "L'amiral Cherche Une Maison à Louer," written in 1916 by Tristan Tzara, Richard Hulsenbeck, and Marcel Janco for performance at the Caberet Voltaire. This recording was made by the Italian Trio Excoco. From UbuWeb:
"L'amiral Cherche Une Maison à Louer" is one of the best known examples of Dada tonal poetry, in which several voices speak, sing, whistle, etc. simultaneously in such a way that the resulting combinations account for the total effect of the work. The simultaneous poem demonstrates the value of the human voice and is a powerful illustration of the fact that an organic work of art has a will of its own…
Some verses of Tristan Tzara, for example "nfoünta mbaah mbaah nfoünta", inspired by African singsong, seem to be analogous to Hugo Ball's work, but in general Tzara's poems consisted of absurd encounters of meanings, and not of sounds, such as the famous "La première aventure céleste de M.Anitpryine" (1916) and the poem that he composed in collaboration with Marcel Janco and Richard Huelsenbeck "L'amiral cherche une maison à louer" (The admiral looks for a house to rent). Tzara's dadaism is not phonic but semantic.