Since you’re looking at a 4-minute and 21-second "full version" video related to Madoka Magica , this length usually points to a high-quality fan edit or a specific full-length music track—most likely a version of the iconic opening theme by ClariS, which runs roughly 4:31 in its full version .

Here is a solid review tailored to that specific video format:

Connect ('Puella Magi Madoka Magica' Opening Theme) - Spotify