For lyrics sites, though, the fallout could be particularly dramatic. The industry was suffering, anyway, Efraim said: Ad-blockers have cut into his revenue, and lyrics licenses - which all sites must have, lest they attract the wrath of the National Music Publishers' Association - are very expensive.
Much like dictionaries, lyrics sites rely almost entirely on search traffic to stay afloat. The top three sites - AZLyrics, MetroLyrics and LyricsFreak - all get between 90 and 91 per cent of their traffic from search, according to SimilarWeb. Any impact to that traffic could wreak havoc on their bottom line; just look at the damage one week of depressed Google-search placement did to Genius.
Lyrics sites are not giving up, of course - they are just evolving to do things that Google doesn't (yet). Lyrics.net employs a small editorial team to encourage community and discussion around its songs. MetroLyrics is barely recognizable as a lyrics site anymore: Bought by CBS Interactive in 2011, its homepage now lists "hot songs," a la Billboard, and news items about Alicia Keys, Selena Gomez and Rihanna.
Still, the future remains uncertain: It's hard to compete in a marketplace where one company not only does a great deal of production but owns the primary means of distribution, too. In a signal of battles to come, perhaps, Google's new lyrics boxes link out to promotions for its own paid music service.
"The bottom line ... is that most small content publishers are very worried about the future," Efraim said. "And for good reason."