How is Grouping different from comments? I've searched on some posts and there are suggestions to set the grouping and then create smart playlists to select the group. I don't see how that's different from the comments field. I have a CD where there are 18 songs, but really there are only 12 songs. 6 of them have an "Intro" song that's 15-30 seconds long and it's right before the real song. Why the artist did that I don't know, but if song 8 is the intro for song 9 I'd like them both to be played when iTunes randomly picks song 9. I could do without that, but I really don't want iTunes to randomly pick song 8. I could uncheck the intro, or give it a low rating or whatever, but I was hoping that I could connect the two. Is that what grouping is for? If so, how do I use it? Do I just put a number in it and every song with that number is connected? I'm not sure how to keep track of that.