In this paper, we present an environment for labelling and testing of melodic aspects of spoken language. The environment has three modes of application: First, the environment provides labelling facilities for a model-based melodic description for German. Second, it supports a language independent pre-theoretical description of speech melody allowing the development of new melodic categories. Third, our test bed can be used to generate speech samples with controlled melodic parameters for further use in perception experiments. The melodic description facilities (model-based, pre-theoretical) are supported by visual and audible feedback allowing a step-by-step refinement of the melodic description in question.