I share @Goffik’s point of view and I can understand @AwwwHeck 's disappointment. Some users bought a 1 year subscription for 100$+ expecting to play their favorite songs with full backing track. And less than one month after their purchase, the tracks disappears for licensing issues which we can understand. But then after, the full band backing track disappear too and we go back to midi sound.
What gives me hope is that recently Musopia has got involved in the community and said that they would work on it : New songs not having full band track. So, I will give them a chance and hopefully we will get full band backing track soon 