How does changing tempo affect a musical rhythm?

Changing the tempo of a musical piece does not affect its rhythmic structure. While tempo—the speed or pace of the fundamental beat—can be adjusted based on a performer's interpretation, the acoustics of a venue, or the size of an ensemble, the underlying rhythm remains the same.1234

Rhythm is defined as the placement of sounds in time according to a regular and repeated pattern. Because this pattern is determined by the relationship between notes (such as quarter notes or eighth notes), the same rhythmic structure is produced regardless of whether the music is played at a fast or slow speed. While tempo changes contribute significantly to the overall mood, expression, and feel of a performance, they do not alter the fundamental rhythmic composition of the work.123