Complex sentence: Though the trio of musicians who make up the D.E.Y. didn't grow up together, their interests, both personal and musical, were similar enough that when they eventually met they knew immediately that they should work together.
Split into simpler sentences: Though the trio of musicians who make up the D.E.Y. didn't grow up together, their interests, both personal and musical, were very similar. When they did eventually meet, they knew immediately that they should work together.