I just found Gotham City Express on Google Music. (On Spotify also, but only five tracks). Not sure that would be on Tidal ;-)

Still, I'm not sure it was available on CD either. (officially)

My CD collection is nothing like some of you have, but what I have is ripped to FLAC and on the network. I think I'm better off with Google Music and buying the odd CD when I find a worthy candidate.