[Zubersoft]

The other users have suggested that, once you hit enter and the song is added to the list, the search term is fully selected with the cursor at the end. If you then type a character, it will replace whatever text is there, accomplishing the same goal as clearing it. The benefit of this approach is you can then tap at the end of the search term to clear the selection and edit it instead of having to retype the whole thing, which is valuable if you need to enter a search term that contains the same starting characters as the existing search term.

Mike