"Unjustly neglected masterpiece" is a cliché of musical criticism, and usually an exaggeration. Romanian master Enescu's vast journey through aspects of the Oedipus myth seemed like an unacknowledged great among 20th century operas through the medium of the starrily-cast EMI recording with José van Dam as the noblest Greek of all; after Martinu's Julietta and Szymanowski's King Roger, here was the last titan to be properly served by a top UK production.

Another year, another new full-length story ballet from one of the Royal Ballet's in-house choreographers. Time was – a long time, in fact, up to 2011 – when that would have sounded like science fiction, but no longer: Liam Scarlett, whose Frankenstein premiered last night at the Opera House, is treading a path worn smooth in the past five years by Christopher Wheeldon, Wayne McGregor and Carlos Acosta.

It was twelfth night for Christopher Wheeldon's two-year-old, three-act Shakespearean ballet, and this newcomer had one nervous anticipatory question. The verbal music is gone, only the plot remains, so could A Winter's Tale the play inspire Wheeldon to imaginative heights in the way that Romeo and Juliet brought out the best in MacMillan, via Prokofiev?

Russian bells and spinning tops dominate Richard Jones's predictably unpredictable take on Musorgsky's saga of a conscience-stricken Tsar. Latter-day purism tends to insist on the composer's seven-scene 1869 original – possibly for economic more than artistic reasons – and this two-hour-plus, interval-free whizz through seven years of Russian history is the most faithful to the first score I've heard.

One of the secrets to enjoying life is mastering the creative use of disappointment. Many in the Covent Garden audience last night were no doubt deeply disappointed not to be seeing Natalia Osipova's legendary portrayal of the title role in Giselle, injury having removed the Russian superstar from the opening night cast.

From working-class hell via convent purgatory to Florentine comic heaven, the riches of Puccini's most comprehensive masterpiece seem inexhaustible. In a production as detailed in its balance between the stylised and the seemingly spontaneous as Richard Jones's, first seen in 2011, there are always going to be new connections between the three operas to discover. Some things are stronger, some weaker second time around, but you still come away convinced that each work glows best in its original context, and that none should be prised away.

What fun it must have been to attend any of the St Petersburg Free Music School concerts during the second half of the 19th century. Balakirev, idiosyncratic mentor of the group briefly together as the "Mighty Handful", and his acolytes – Borodin, Musorgsky, Rimsky-Korsakov and the one we usually don't mention, César Cui – would have had orchestral works and sometimes the odd aria from an opera-in-progress on the programme, often alongside music by their western idols Berlioz, Liszt and Schumann.

Why have all attempts to make French comic opera funny to British audiences fallen so flat, at least since ENO's 1980s Orpheus in the Underworld? That company's La belle Hélène simply curled the toes, while Opera North managed to make a pig's-ear "special edition" of Chabrier's Le roi malgré lui. L'Étoile in its first staging at the Royal Opera fares better, not least because it's mostly performed in impeccable French, but does it ever reach the potentially hilarious pitch of Gilbert and Sullivan?

To say this latest revival of the Royal Opera’s Tosca peaks early would be an understatement. The shockwaves rippling out from the brass and timpani in the first few bars set the auditorium rumbling, tumbling the strings into motion. Conductor Emmanuel Villaume seizes his audience and refuses to let go, dragging us in to join the dance of the Sacristan’s sleekly self-satisfied music with its sacrilegious whiff of the Palm Court.

Please, sir, I want some more. Will Tuckett and Alasdair Middleton's Elizabeth is soul food for the hungry dance fan; an ingenious blend of words, music and dance that beguiles and entertains in equal measure. The shame is that it will be seen by so few people: created in 2013 for a special performance in Greenwich and now restaged for a week's run in the Royal Opera House's Linbury studio theatre, it will reach a total audience of mere hundreds – but I'd back it for a month or more, and to be a huge hit with theatre-goers as well as dance-lovers.