The first UK performance of Broadway hit Hamilton has left audience members singing the hip-hop musical's praises.
The Daily Mail's Baz Bamigboye said it had been "the best first preview of a musical [he'd] seen since Miss Saigon".
In the Telegraph, meanwhile, Veronica Lee said the show at the Victoria Palace theatre "went without a hitch".
The opening of the show had been put back a fortnight, due to delays in the venue's extensive restoration.
Previews continue until 21 December, when the Tony-winning musical will have its official opening night.
"Saw the first performance of @HamiltonWestEnd tonight and it literally blew my mind," tweeted "serial theatregoer" Daniel Lewis.
Saw the first performance of @HamiltonWestEnd tonight and it literally blew my mind. The most astonishing piece of theatre I've ever seen. Remortgage your house and get a ticket, it's that good #speechless #HamiltonLDN pic.twitter.com/vrrZBgRJvY— Daniel Lewis (@bigdannylewis) December 6, 2017
His sentiments were echoed by David Cambridge, who said he felt "so privileged to see the very first UK performance".
First staged in New York in 2015, Hamilton uses hip-hop and rap to tell the life story of one of America's founding fathers.
The role of Alexander Hamilton is played in London by Jamael Westman, a 25-year-old Rada graduate with only two other professional stage credits to his name.
According to the Evening Standard, whose editor George Osborne was among Wednesday's audience, Westman gives "a superlative performance".
"He absolutely smashed it," agreed Frank Ikenye on Instagram. "Wouldn't think this was only his 3rd production."
Hamilton himself! He (Jamael Westman) absolutely smashed it, wouldn’t think this was only his 3rd production! Proper humble dude too, he actually asked me for the photo 😏🙈! #hamiltonldn #hamilton #linmanuelmiranda @hamiltonwestend @hamiltonmusical #pearlywhites #selfiegameneedswork #sodoesthesmile #jamaelwestman #hamgeek #imsuchagroupie #agrownmanshouldntbethisexcites #groupiefortheday 🤦🏾♂️🙈
Hamilton is already one of the hottest tickets in London, prompting its producers to bring in a paperless ticketing system to combat touts.