By Confusion, Constant Gardner, Graham, and Alex Siber

While 2015 has been a great year for big-name releases, all the fanfare has made it tough for lesser-known rappers to get some shine.

But the same can't be said for hip-hop's producers. From London O'Connor's bedroom recordings to Stefan Ponce's continued Chicago domination, this year has brought out the best in a DIY generation. The resulting class of up-and-coming producers is a strong one, many of whom balance their work for others with burgeoning solo careers. Some of the names on this list might be more familiar than others, but rest assured: if you're not familiar yet, you should be.