How can you delete a song?

The same song was entered several times by error, and was hoping to be able to delete multiple same song entered, while keeping the correct one.

Click "Songs" at the top, find the song you would like to delete, right click and choose "Delete".

I have a iMac, and it is not allowing me to right click and delete. Any other suggestions?

I believe a two finger click is a right click on mac.

Thank you. Trying to learn the differences now! Your help is greatly appreciated!