At least it made it to Wikipedia
On 11 May 2017, during the transmission of the second semi-final, the microphone of the Estonian representative seemed to have malfunctioned as singer Laura Põldvere could not be heard for approximately two seconds by viewers at home. It was later revealed that the Estonian delegation considered appealing to the EBU to allow Laura & Koit Toome to perform their entry "Verona" again as a result of the error, but later decided against it. Mart Normet, the Head of Delegation for Estonia, explained "If there has been such a powerful performance for three minutes and given an absolute maximum, then this energy again does not come back when you go on stage again". The EBU responded to the situation, reportedly describing the error as purely technical, as the microphone was supposed to automatically come on. Instead, a sound technician was forced to respond by manually switching on the microphone via the sound desk.
The country ultimately failed to reach the grand final, with Põldvere expressing her annoyance, however stating "I do not think it’s so tremendously influenced when a few words remain unheard".[168][169]