Help phrasing a JOIN Query ?

I am not very experienced in MySQL - so there is a good chance I may be asking for a simple and basic advice - in that case, I apologize:

I am building a "search" for specific classical music-pieces.

I have my main table with aprox 8000 classical pieces.
And then I have a separate table with what is called "movements".
("movements" are basically like chapters in a book. Different parts of the piece, with separate names)

I call the pieces for "Works".

And here is my problem.
The Works are all unique and each have their own id.
The movements also have unique id's - but they ofcourse relate to the "Works" database - by having a "Works_id" field. Which means that there will be anywhere between 1 and 20 "movements" with unique id's - BUT with the same work_id.

I am trying to phrase the query so that when I type a searchphrase in my search field - the query should check if the search phrase is present in any of the "names" fields in both "Works" and "Movements" tables.

In the "Works" table I have "first_name", "last_name" and "Full title".
That part I got.

But then I also need to check the names of the "movements".
If the search phrase does not exist in the "Works" tables field - then perhaps I am searching for the name of one of the movements.

I dont need to display the movements.
I need the "work". - But it is possible that I am sarching for the name of one of the movements to this work.

Here is my best bid, searhing for "dom":

SELECT
`works`.`full_title`,
`works`.`id`
FROM `works`
JOIN `movements` ON `movements`.`works_id` = `works`.`id`
WHERE `works`.`full_title` LIKE '%dom%'
OR `movements`.`name` LIKE '%dom%'

Code (markup):

But this results in many duplicate "works"."id" s. (because of the movements, I guess)
How do I avoid the duplicate works.ids ?

Can you help?

Thanks
John