Sounds like embellishment, but Scott Adams in a semi-popular known case lost the ability to speak... but could still sing. It seems like the brain somewhat part

Sounds like embellishment, but Scott Adams in a semi-popular known case lost the ability to speak... but could still sing. It seems like the brain somewhat partitions off language abilities and in cases of loss, one or the other can still be used. IIRC people have lost ability to speak one of the 2+ languages they're fluent in.