Wiktionary
lyricless
a. (context of a song English) Without lyrics.
Usage examples of "lyricless".
Symphonic, lyricless, frighteningly expensive (not to mention twice as long as it had been supposed to be), we'd recorded it in '78 and '79, and spent a year trying to mix the bastard.
Big Sam and ARC both thought it was a potentially disastrous and fan-losing departure to perform a lyricless piece of music as long as a movie to entire stadia of people who'd probably come to hear us recreate our singles.
A few must have heard the album on import, or got their newly released copies very early (or been incredibly avid fans) because some of them seemed to recognise a few of the tunes, and even sang along with one or two of Christine's lyricless voice parts.