What is it with this sudden Cohen revival going on in our household? I went to bed last night and Clemency was sitting up under the covers with 40 year old sheet music scattered all around her, going over the tablature for Suzanne and The Stranger . I only have to play a few bars of Hallelujah ( any version will do, but Jeff Buckley works best ) and she's speechless - drifting around the room with a dreamy look on her face. It's very handy, but also puzzling in a woman whose usual taste runs to Teleman Beethoven and Rachmaninov. Why is it that I woke this morning with a burning desire to listen to Rufus Wainwright singing Chelsea Hotel ? Why is it that since about 5 I have been awake with the song - well, actually, not the song, but one line from the song - running through my brain? It happens doesn't it? A catchy phrase or a haunting bit of melody gets stuck in the gray matter like a piece of gristle between the teeth and no amount of mental licking and pushing can dislo...