Merging Fields…

Here’s what I want to do. I’m not sure HOW. I can use some help.

I have a Content type which contains a variety of information. For example’s sake, we’ll say that the content type is “Bands” And we’ll say that the information contained includes:

Band Name
Lead Guitar
Bass Player

So, Populated, we’d have:

John Lennon
George Harrison
Paul McCartney
Ringo Starr

(And each of these is entered separately as Last Name and First Name.)

So, if I’m writing code, I know how to merge strings, but how do I do this in Drupal? How do I basically Say: “Group = Name1+Name2+Name3+Name4”? So that Instead of having to clutter things with multiple fields, I can just say:

Group=”John, George, Paul, Ringo”

Drupal version: