Which tool would likely be used for digitally editing music?

The most suitable tool for digitally editing music is a digital audio workstation (DAW). A DAW is specifically designed for recording, editing, mixing, and producing audio files. It provides a comprehensive platform that allows users to manipulate sound waveforms, arrange tracks, apply effects, and mix multiple audio sources into a single project. This functionality makes it an essential tool for musicians and producers who need to create and refine their music in a digital environment.

Other options, while useful in different contexts, do not serve the same primary purpose. A digital metronome is used for timing and tempo but does not facilitate editing audio tracks. Music notation software focuses on writing and arranging music in the form of sheet music rather than editing audio recordings. A physical recording studio typically involves hardware and may have software components but is not specifically defined as a tool for digital editing; instead, it's an environment where recordings are made. Therefore, in the context of editing music digitally, the DAW stands out as the most appropriate choice.