Logline
An accident with an experimental quantum probability field causes everyone on the USS Enterprise to break uncontrollably into song, but the real danger is that the field is expanding and beginning to impact other ships—allies and enemies alike.
Written by Dana Horgan & Bill Wolkoff
Directed by Dermott Downs
Given that the subspace rhapsody spread to many other ships in the area, they could do a parallel episode from the point of another the ship, say the Farragut but it won’t be the same primary cast.
I would put my money on the anomaly somehow chasing Boims to the 24th century Cerritos.