Much of the music written before 1900 is in fixed meter, that is one meter (or time signature) per piece. When the meter changes, frequently or infrequently, from one time signature to another within the same piece, it is called mixed meter.
When learning a new piece, it’s important to first scan the music to get an overall feel for its structure, a process called pre-reading. Look for elements like key signature, challenging rhythms and pitches, and musical patterns.
When Jesus Wept was originally composed as a canon (musical round) in 1770 by American composer William Billings. The setting here is two-voice/imitative and was arranged in response to the George Floyd death on May 25, 2020.