iTunes Match music only visible in playlists on Laptop

I have a home computer (iMac) that has my music library on it. I set up iTunes match from that computer. It's now finished uploading (Steps 1, 2 & 3). I've turned on Match on my iPhone and that is all working fine...

However...

On my laptop, I've turned on Match. It says it's finished the process and all the music should be available. My library looks empty though except for one album that happens to be the only iTunes LP I ever bought. My library appears empty under the tabs: Songs, Artists, Albums, Genres. However the playlists from my iMac are visible - I can click on them and any songs in them do play. I also created Genius playlists and all of my music is playable within those also.

But outside of playlists, I can't find my music. Where is the main library? Should the artists tab etc be empty? Am I missing something here?