When Genius was first introduced, it brought with it the Genius Sidebar, which was the way that Apple delivered its "if-you-like-that-you'll-like-this" purchase recommendations.

After learning of i Tunes 9 becoming available by repeatedly clicking “Check Now” on Software Update for the past couple of hours, I installed the update and immediately went for the Genius Mixes feature.

At this point, I’m not really impressed with mixes.

The process will take more or less time depending on the size of your library.

My library, with 7518 songs, took about 20 minutes to complete the setup process the first time I did it.

) new music you'll like based on the music you already own. How you disable Genius depends on what version of i Tunes you're using and whether you use i Cloud Music Library.i Tunes 12The location of the option has moved compared to earlier versions of i Tunes, but turning off Genius is still a matter of a few clicks: Older i Tunes Versions If you have an older version of i Tunes and haven't subscribed to i Tunes Match or Apple Music, you can completely turn off the Genius features by going to the Store menu in i Tunes and choose Turn off Genius.

And that's great, but the i Tunes Genius interface also takes up valuable real estate in your i Tunes library, and if you don't use the feature you may want to turn off Genius or the Genius sidebar. If you do that and want to get it back, you'll need to turn Genius on again.

In those cases, follow these steps: Some readers report that when they turn i Tunes Match or i Cloud Music Library back on they're forced to entirely re-match their i Tunes libraries, which takes hours or days for some people.

This hasn't been my experience—in turning i Cloud Music Library and i Tunes Genius on and off, re-connecting takes my 10,000 song library less than 5 minutes.

For example, you can include both songs and music videos in a “greatest hits” playlist. The Purchased playlist contains content you’ve downloaded from the i Tunes Store.