A Song Title

A Song Title
 

I decided to brush up on my spanish by writing a song in spanish.
However, I am already stumped at the title!

I want the imagery to be stardust and rainbows, as I am working on an image to match and I have a good idea for it. I looked up galaxy, galaxia, and rainbow, which was arco iris. But all three words sounds too long.

If I used something like Galaxia Iris, would it make sense? Arco and iris are two different things when apart, right? And if I made it Arco Galaxia, would it be Arco Galaxia? Would that even count as an adjective?? I don't want the song to have a name that sounds too simple, I want it to sound artistic and deep. Anyone got some answers or input? Would be much appreciated. Thank you!

And if you can't tell, it's been a long time since I've studied Spanish... sorry if I ask easy questions.

When writing a song in Spanish, you should not be concerned that Spanish words contain more syllables than their English equivalents. That's a given.
Indeed, songs that are written in one language will seldom match the same meter when translated to another. You'll find yourself relegated to only translate the feeling of the song using words that fit the meter.

If you're not trying to write a song that has two sets of lyrics that fit the same meter, your job is easy. Assemble the correct lyrics, in rhyme (or not), and then set the tune.

None of your shortened suggestions work. If the song is about stardust and rainbows, use the Spanish equivalents.
For stardust, I suppose the meaning you're after is the dusty material found between stars or a cluster of distant stars appearing to the observer as a cloud of dust, and not a dreamy romantic or sentimental feeling. If I'm wrong, you'll need to provide the meaning or feeling you want to convey.

Here are the Spanish words for what I suppose you want to convey.
stardust = polvo estelar -or- polvo de estrella
rainbow = el arco iris
rainbows = los arco iris

But perhaps you're after words of imagery, since you stated that the words should sound artistic and deep. Words of imagery could be composed of even more syllables, or you could just let the artistic and deep imagery of the Spanish words seep in.

Naw, I think I must have misconveyed. It's not about syllables at all.
It's more that I want it to be short and catchy. The title, I mean.
I'm not going to write it in English and translate it, I'm going to get a basic idea of what I want in English, then seek out words in Spanish that flow together nicely.
I've written a song in Spanish before, just not for a long time.

I realize it might not be a proper word if I use short forms of both, but as long as they understand where the two parts are coming from and what they represent, it's still okay.
I want a catchy and unique title, so using like, original slang or something is what I was going for, but I wanted it to be understandable as well.

Galaxia Iris sounds good. Arco Galaxia sounds horrible.

I agree with Alec.

(Although it seems to me a daunting task to write a song in Spanish, if it is not your native tongue...)


Astro-iris... Galaxia de colores

Galaxia irisada

Constelación polícroma

Polvo de estrellas de luces… de colores...

Thank you both for the feedback and ideas! :)
Yeah, it's a little difficult but I think something creative, challenging and fun will help me learn!

You're welcome, then.

We will be glad to see/read your creation... if you want to share it!