BTS of a three light set I pulled from the interwebz
And the BW image ~~
This is both funny and interesting at the same time. Bob (Robert Harrington) is a good friend of mine and a great teacher on how to light using small flashes. In his workshops he teaches beginners that the first modifier they should get comfortable with is a... shoot through umbrella. Can he light without it, absolutely, but using a light photographically is about manipulating shadows including their intensity and transitions. A bare light will help you see where you're aiming, but little on practical use of transitions.
A bare bulb with a metal reflector will give you directional hard light. A bare bulb with a shoot through umbrella can give you hard directional light (remove the umbrella) soft edge transitions like a soft box and anything in between. You can even control the direction so you don't have a "light grenade".
Sorry, I'll still maintain the first modifier should be an umbrella.