What was added to horns and other brass instruments to improve their sound during the Romantic period? Strings
Wood choice
Piano keyboards
Valves

Low Brass - Trombone and Tuba were added to the standard orchestra - now trumpets, french horns, trombones and tubas could function as a separate group. Full brass section added richness and fullness of sound - made climaxes loud and exciting. ... Tremolo passages (very rapid bowing) were used to strengthen sound

Explanation:

well seeing i am an artist and i actually did a self portrait; i will describe how i painted it.   i used acrylic on a stretch canvas about 4 feet wide by 6 feet tall. i painted myself smiling in a soft pink long dress, white tile floor sitting on a white couch with a table behind and a vase of gorgeous flowers.   i also had a round white hat with a soft pink ribbon through it laying on the floor and on the table behind me was a lit candle. i kept it simple but soft and romantic.

jan tschichold, the son of a designer and sign painter