I always asked myself: can classical music and pop/rock songs be the same level of art?
In my opinion a pop/rock song can be also a masterpiece if it shows all these features:
A supplementary way i use to countercheck if a pop/rock song is a masterpiece is to see if it reminds me a certain "image" among the followings two:
Below just a simple example of "visual" detection:
Note: if a work doesn't match the above criterias it doesn't mean that's not a masterpiece but only that's not detectable by my method.