There is a misconception about Spotify. That is places all the music in the world merely a click away.
The online streaming service has changed the way we consume music. And it does allow you to type in the name of pretty much any artist, song, or album, and listen to them on your computer or smart phone in its entirety. It's turning on the sonically curious to entirely new genres and facilitates any musical research we've had to do recently. It's also has been a final death knell to CD collections everywhere.
As of last year, Spotify claimed to offer 20 million songs. However, there are still some small, as well as some rather large, holes in Spotify's library. Here are the most obvious and unfortunate vacuums preventing Spotify from being all-encompassing.