Please be sure to visit your Friends page under settings to add this community to your friends list. This way rather than simply watching the discussion you can post to the general topics area. For this you post in your journal as usual, except that you find the drop-down box which lets you select which journal you post to. You may need to expand the page with a link at the bottom to include more than the basic posting info. Once it is expanded you will also be able to list mood and music.
I am slowly archiving old writings and making them available to "friends" only.