!songs request ngzC_8zqInk
In the case of search terms
!songs request Arctic Monkeys - R U Mine?
will search YouTube for a video with the closest name if the channel configured YouTube as the search provider.
Note: When entering the video ID only the standalone ID will work. No additional characters can be added, for example !songs request /watch?v=ngzC8zqInk and !songs request ?v=ngzC8zqInk will result in an error.