How nice would it be if you are in the window of a specific artist and you know the name of a song:
No matter if there are albums, singles, compilations and so on. If you fill in one letter - for example an a - then songs with other letters disappear. If you fill in another c and yet another c again, so you have 'acc'. With the artist Jubei probably the only song that would not disappear is "accidental note".
This system would greatly advance the way you could search for a song in the database of a specific artist. Some lists in the windows of artists have become so long you need to search for specific song a very long time.