The Melodic Transcription (MeT) scale is a perceptual scale developed to contribute to the documentation of pitch movement in the Blackfoot language and to support the teaching and learning of Blackfoot prosody. This scale was developed as part of an online tool, Melodic Transcription in Language Documentation and Application (MeTILDA), which is an ongoing collaborative project among the co-authors: a linguist, a musicologist, a computer scientist, and a community stakeholder. The MeT scale is based on the semitone scale, a logarithmic scale based on fundamental frequencies that reflects human auditory perception. The way the semitone scale is implemented in music and linguistics differs, and each implementation has advantages in addressing the Blackfoot community's needs; these advantages have been combined to create the MeT scale. This paper introduces the MeT scale and describes its development for language documentation and application. The goals of typical formal linguistic research today are rarely in line with language communities' language revitalization efforts; the MeT scale exemplifies one way to connect linguistic research with work on language reclamation: community-based applied research.