Ditch the divers, the video-projected sea and the Relevance with a capital R of ENO's production last season - which managed all three very well indeed - and what remains of Bizet's Pearl Fishers in concert (and in French)? Three ravishing arias, three passionate duets, orchestration and harmony of a subtlety way beyond the plot's cod-oriental hokum: that's enough to begin with. Put Royal Opera music director Antonio Pappano, master of exquisite colour and winged phrasing in French music, in charge of orchestra, chorus and two-and-a-half top singers, and you're in for a treat.

After Monday's report on the Royal Opera House’s new contract demands, a young composer alerted theartsdesk to an intriguing offer on the Covent Garden website - to "Create" a soundtrack for dance. This is a competition for new talent which will be judged by a team led by Deborah Bull, the ROH’s Creative Director: the winning entries to be shown at the ROH in November as part of the FIRSTS 2010 festival.

For a creator of any kind, keeping control over what happens to their original work is essential. Their creativity is their livelihood, and their reputation is built on it. They protect it fiercely from other people copying it, altering it, selling it - anything in fact which devalues the work and damages the creators’ earning capacity from it.

We should lie down to listen to music much more often. Gravity pulls away the thought and frown lines, smoothes the intellectual tracks and folds on the face, while you feel the blood in your head pumping lushly to dreamier parts of your brain. Joanna MacGregor’s If-A-Tree festival at the Royal Opera House this weekend may well be hitting some fey bases along its way, but Earthrise: The Lying Down Concert - was a spectacularly enjoyable opening event.

Over this weekend the spaces of London's Royal Opera House will be transformed by strange sounds, vaguely operatic, vaguely foresty, thoroughly chilled. The ambient atmospheres will be made by Scanner, who calls himself a “cultural engineer” and has made sounds for morgues, dances, Philips wake-up lights and chill-out rooms in clubs, during an extraordinarily eclectic career that seems to exist somewhere on the very edge of technology.

The Bolshoi Ballet and its London promoters have confirmed wholesale casting changes to the Covent Garden tour starting next Monday, due to the last-minute absence of prima ballerina Svetlana Zakharova. Zakharova was due to give six performances, but has withdrawn due to a hip injury, it is said. Her partner the celebrated male star Nikolai Tsiskaridze has withdrawn from Giselle, and appearances by another senior ballerina Maria Alexandrova have also been reduced.

The Bolshoi Ballet and its London promoters have confirmed wholesale casting changes to the Covent Garden tour starting next Monday, due to the last-minute absence of prima ballerina Svetlana Zakharova. Zakharova was due to give six performances, but has withdrawn due to a hip injury, it is said. Her partner the celebrated male star Nikolai Tsiskaridze has withdrawn from Giselle, and appearances by another senior ballerina Maria Alexandrova have also been reduced.

David McVicar's new Aida production had an opening mise en scène of such unashamed ugliness, a revolving main feature (a wall of scaffolding) of such audacious featurelessness, a wardrobe of such brazen tastelessness (think Dungeons and Dragons), that my critical faculties sort of went into a coma.

No longer, it seems, need ballet's most transformable heroine languish by the seasonal fireside. It's true that you'll have to wait until Christmas to see the most visually striking Cinderella of all again - Ashley Page's fitfully ingenious Scottish Ballet version showcasing magical designs by Antony McDonald. But English National Ballet's Cinders is out and about this spring, and now Ashton's first full-length triumph returns with period glitter to Covent Garden.