Does anyone know any more music like this?

These are in the 'vocabulary' of modern and contemporary classical music.That area has a wide variety of styles, from more conservative 'modern' (Samuel Barber) to the more complex avant-garde.

There is so much, of such different styles, room here allows for little.

More by Samuel Barber:

Medea (orchestral - suite from a Ballet)

http://www.youtube.com/watch?v=iq2aE-tpZWc

His piano concerto is rather stunning:

http://www.youtube.com/watch?v=NWY7Khhv7T0

http://www.youtube.com/watch?v=cWUl9dMFfXY&feature...

http://www.youtube.com/watch?v=TkMFpLUZNGE

You will want to check out, too, his lyric masterpiece, "Knoxville, summer of 1915"

http://www.youtube.com/watch?v=sJjXadvkohk&feature...

and "Must the winter come so soon? from his opera 'Vanessa'

Igor Stravinsky ~ Le Sacre du Printemps, a ballet score now almost one-hundred years old and to many still sounding most aggressively 'modern.'

http://www.youtube.com/watch?v=x61sCeH7eBE&feature...

another 20th Century landmark

Olivier Messiaen ~ Turangalila Symphony (Massive 10-movement piece)

http://www.youtube.com/watch?v=8PjyCpRKDrk&feature...

Lucia Dlugoszewski ~ Fire Fragile Flight (an exceptional and imo beautiful piece)

http://www.youtube.com/watch?v=ZiVmfAeVBxc

Here is an excerpt from American composer John Adams' recent opera,

"A flowering tree" (the finale)

http://www.youtube.com/watch?v=YsrL-oqr5zw

The other two links (not Barber) fall under the category of 'film music,' which has many a classically trained composer using any number of styles, even within one film score. I'm less familiar with film scores. If you ask on Y/A classical, I'd suggest saying, in your Q, that you know Film scores are Not 'classical' - to avoid the flack or flamewar from some of the more nit-picking Y/A classical members:-)

Best regards.

They all suck

You might enjoy the ballet music from Cinderell by Prokofiev it has many moods and very huanting melodies.