Supergirl and The Flash Crossing Over for Musical Episodes This Season

The Flash and Supergirl, both starring Glee alums and accomplished singers Grant Gustin and Melissa Benoist, will crossover for a special two-part musical episode this season, in addition to the four-part crossover hitting all for DC shows on The CW.


Didn't this signal the end of Buffy and Angel when they went the musical route?