1st violin 2nd violin Viola Cello
Two violins, a viola and a cello is the standard.
Generally, a string quartet consists of two violins, a viola, and a cello. However, a quartet can be made up of all sorts of variations on this model.
You would find violins, cellos and maybe a Double Bass.
fuhgeddahboudit!
Two violins,viola and violoncello
Asteria are a quartet who play string instruments. Although their official website says they trained together it is not possible to find out their names from there or elsewhere.
String quartets have been composed in a number of styles or genres, for example classical, romantic and modern. If you are trying to find a certain type of piece for a string quartet, many works in many different styles have been composed or arranged to be played by a string quartet.
1st violin 2nd violin Viola Cello
You can get used string instruments from countless local music shops. If you use google maps you can find a very long list of the shops nearest you.
Usually tuba, trombone, french horn and two trumpets (another trumpet player might play piccolo trumpet)
Hope ya find out. I'm looking ATM and will let you know when I do.