Viewers are wondering why Kelly Rowland and Michelle Williams' microphones were turned to a much lower volume than Beyonce's during their Destiny's Child reunion at the Superbowl.
Her spectacular half time Super Bowl show has been widely acclaimed by critics in a welcome blaze of good publicity following the recent lip syncing furore at President Obama's Inauguration.
And Beyonce was clearly determined to ensure her singing was well and truly heard by the watching millions, even if it meant overshadowing her Destiny's Child bandmates.
When Michelle Williams and Kelly Rowland joined the star on stage for a medley of the band's hits, many fans complained they could not hear the duo's voices in contrast to Beyonce.
Forbes contributor Blue Carreon wrote: 'It was difficult to hear the vocals of Rowland and Williams, either because of the microphone volumes or the background music.'
CBS News added: 'Rowland and Williams were barely heard when the group sang Independent Woman, as their voices faded into the background.'
'Rowland and Williams' microphones seemed to be at a lower volume than their former groupmate's,' agreed Zap2It's Lauren Brown.
Some commentators claimed Williams's microphone wasn't working properly, while a Twitter row erupted when Keyshia Cole criticised Williams' performance.
'I think I was frightened to blink for a sec,' she wrote. 'Then Michell (sic) sung and woke my ass up from my daze! She always f*** the groove up.'
Twitter was abuzz with comments about the performance, along with jokes and comments about Michelle, who is seen by fans as being something of a 'third wheel' in the group.
'@MICHELLEWILLIAMS You better not ruin this moment for Beyonce and Kelly,' one fan wrote.
What happened to #KellyRowland & #MichelleWilliams Mics? Hmmm,' another tweeted.
E! commentator Marc Malkin added: 'I think Michelle and Kelly r p***ed their audio was so low that they cut the wires on their way out,' referring to the power cut which followed Beyonce's electrifying performance.
Several lights in the stadium went out for a few minutes before normal service was resumed between the San Francisco 49ers and the Baltimore Ravens.
Michelle herself seemed immune to the furore, later tweeting: 'Had a great time w/my sisters tonight!! Tried to keep it a surprise!! Love you all...God bless!!'
The Ravens ended up winning the game by a score of 34 to 31.Jacked from The Daily Mail