Songs with cloud icon in my iTunes on my iPhone?

I know that these songs are stored on my iCloud to be able to download when connected to a wireless network, but I don't know why these specific songs were selected, so I don't want them showing up on my iTunes, or if I can choose these songs myself, I'd rather choose ones that I may actually want to listen to. Right now the songs that show up are entirely random and not songs that I would choose to listen to (I have a lot of music on my iTunes that is either old or never listened to). If you know how to get rid of them or how to choose them, I'd appreciate the help!

Songs with cloud icon normally mean that you have purchased the songs from iTunes and you can get them for free using the same account that you bought the songs on. Same applies to apps. You can only delete songs on your iPhone not in the iTunes App.