Does the lyricist get credit when the tune is performed instrumentally?
I've never seen a single sheet music edition of "Theme from ST" from the Sixties. I have it in a modern (well, '90s) folio. It's just a piano arr. I'll find it and see if GR Is listed. Anyone know if sheet music was produced contemporaneously with the actual series thiugh?
Yes, to clear this up, I'll explain.
A PRO (performing rights organization) like ASCAP or BMI, the two main PROs in the USA, deal with distributing royalties to composers and lyricists. The royalties have two parts. One half (the writer's share) goes to the composer, composers, and lyricist (if there is one) and is shared evenly by the parties who wrote the piece. Sometimes a big star will record the works of an up-and-coming composer but adds their name to the credit in order to share the royalty. The other half of the royalty payment goes to the publisher. In many cases, the composer has their own publishing company and gets 100% of the royalty.
So in the case of the Trek theme, Sandy Courage wrote the main title music and is entitled to the writer's share of the royalty. Because it was a work-for-hire, as most TV/film scores are, the production company owned the publishing. Delis (later Paramount) got 100% of the publishing royalty. Very typical arrangement. When the show went to series, Roddenberry wrote lyrics (not very good ones) and claimed himself as lyricist, thus making him eligible for 50% of the writer's share, reducing Courage's share to 50%. This was a drag for Courage because he didn't get paid very well for the pilots or the series score that he wrote. It ate into his BMI royalties, although he did well.
That said, Roddenberry made good by using Courages fanfare in TNG for 7 years plus syndication, thereby giving Courage 50% of the TNG theme and Goldsmith the other 50%.
A composition with lyrics will pay a royalty to the lyricist if the words are sung or if just an instrumental.
The words to Trek were never meant to be sung, only meant to give GR another source of income.