I encountered the same issue once. Was trying to identify a song in a DJ set and all I had was a tape dub converted to MP3. Making a snippet and playing it back to my phone through a TRRS cable didn't work to identify the song through Shazam or Soundhound.
Playing it loud on an average, bass boosted bluetooth speaker box (almost to the point of distortion) and letting my phone's crappy microphone pick up the song... Did.
Given that the song detecting apps expect to pick up songs people play by sticking their phone in the air, I would not be surprised if a signal could also be _too high_ of a quality for a match.
I have no idea why it didn't work on previous tries, my conclusion that the song wasn't in the Shazam database was faulty though, as that Twitter user proved.
Playing it loud on an average, bass boosted bluetooth speaker box (almost to the point of distortion) and letting my phone's crappy microphone pick up the song... Did.
Given that the song detecting apps expect to pick up songs people play by sticking their phone in the air, I would not be surprised if a signal could also be _too high_ of a quality for a match.