I know the difference between it and that, but what does that mean in the sentence below? Does it mean the same as it?

I reach for the phone
I don't know who to call
That excites me.
Starving for days,
I've been told it's a phase,
But they don't see.
That I'm holding on to something that I don't seem to catch
Now I've been following the streams along,
But nothing never last.

Source: Wake Up Alone Lyrics

I know the difference between it and that, but what does that mean in the sentence below? Does it mean the same as it?

I reach for the phone,
I don't know who to call.
That excites me.
Starving for days,
I've been told it's a phase,
But they don't see.
That I'm holding on to something that I don't seem to catch
Now I've been following the streams along,
But nothing never last.

Source: Wake Up Alone Lyrics

I know the difference between it and that, but what does that mean in the sentence below? Does it mean the same as it?

I reach for the phone
I don't know who to call
That excites me

Source: Wake Up Alone Lyrics

I know the difference between it and that, but what does that mean in the sentence below? Does it mean the same as it?

I reach for the phone
I don't know who to call
That excites me.
Starving for days,
I've been told it's a phase,
But they don't see.
That I'm holding on to something that I don't seem to catch
Now I've been following the streams along,
But nothing never last.

Source: Wake Up Alone Lyrics

I reach for the phone I dont know who to call That excites me

Here are the lyrics :

http://www.azlyrics.com/lyrics/tungevaag-and-raaban/wakeupalone.html

I know the difference between it and that, but what does that mean in the sentence below? Does it mean the same as it?

I reach for the phone
I don't know who to call
That excites me

Source: Wake Up Alone Lyrics