How convenient and structured to study operas and symphonies if there is not enough time for full-time study?

Attempts to understand operas and symphonies on my own often come up against a lack of time and a lack of structure. The application https://www.virtuosomusic.app/ has become for me that convenient pocket textbook that is always at hand. It perfectly combines short biographical notes about composers with practical listening test tasks. Now every free minute on the road turns into an interesting and useful lesson in musical literacy.