Back in the 90s I had a habit of going to a music store and buying new music based on the design of the album cover alone. I always believed that the cover should capture the sensibility of the music it represents, and good ones definitely do.
One of my favorites I discovered this way is the band …And you will know us by the trail of dead, and their self-titled album.
Their music was something completely new and fascinating to a 16-year-old me. I guess it's called post-hard-core or something, doesn't matter. What matters is that their name and cover art perfectly represented the sensibility of their music, and set my expectations up for the experience of listening to it.
Take that as you will, but there's a huge takeaway in there in regards to design and digital products.