Satyajeet Salgar from Google announced on Twitter that Google has launched lyrics translation in search for a few languages. He did not specify which launches, but he did share a post on Twitter from Anitta, a Brazilian singer, who pointed to her own song lyrics on Google for a search on [letra indecente] on Google Brazil.
Here is her tweet:
Here are the lyrics:
Here is a screen shot of the in-line translation:
Google has had lyrics in English for years, I guess not it works in other languages.
Forum discussion at Twitter.