If I ask "ok Google, what song is this?" it will tell me. However, I prefer to use SoundHound (because I have the paid version, and it stores my searches for later retrieval, and it links to spotify automatically).
Is there a voice command that asks "ok Google, ask SoundHound what song this is"?
I can't even seem to open the app." open SoundHound" yields a Google now result screen (where the first result is the app itself), but it does not open it - probably because the paid app name is "SoundHound infinity " (the symbol for infinity).