Hello, I'm new to these forums.

I'm trying to learn a fancy version of a song called 'Tempestad' by Juan Serrano.

In the beginning, there is a Am chord with a trill, on the same Fret. The tab looks like this:

0 (0)
1 (1)
2 (2)

Now, the frets in the parenthesis are the 2nd notes in the trill. My question is, how do you trill on the same frets? Isn't that impossible?

Or do you just do a trill from Am to open and back? (Which sounds really awful because you can't make a decent sound out of it unless you have the fingers of Thor)

I thank you to anyone who may offer some advice.
Quote by confusius
Are you sure a parenthesis in tab doesn't mean a ghost note?

Just sayin...

Yeah, it has a TR~ above the tablature.

Although, just for curiosities sake, what is a ghost note?
Quote by Vigrond
ghost note?

its a note that doesnt have to be played, but if played, it can sometimes make it sound a tad bit more accurate or better.
1965 Fender Mustang not a RI
Squier Vintage Modified Jazz Bass

Peavey Classic 50
Avatar 2x12

I'd just try to make it sound as close as you can to the song. I'd probably try to just strum those last three notes of Am quickly to give a "trill" sound...though that may not be the correct way.
Mother Earth is pregnant for the third time
For y'all have knocked her up.
I have tasted the maggots in the mind of the universe
I was not offended
For I knew I had to rise above it all
Or drown in my own shit.
rasgueado maybe?
<Raven> I got so baked last night
<Raven> that I WOKE UP high o_o
<Raven> Do you have any idea how euphoric that is?
<Raven> I felt like I was being born.
Quote by C.C. Deville
rasgueado maybe?

I think thats what it must be. Thank you.

There must not be an official notation for rasgueado.