There is currently a great deal of information available to euphonium players who double on trombone, but far less for euphonium players who double on tuba. This dissertation takes information gathered from many top euphonium/tuba doublers, including: Benjamin Pierce, D.M.A., Aaron Tindall, D.M.A., Gail Robertson, D.M.A., Gretchen Renshaw James, D.M.A., Matthew Murchison, D.M.A., Matthew Shipes, D.M.A., Matthew Tropman, D.M.A., and Keith Kile, and presents a synopsis of their thoughts/reflections on tuba doubling. This dissertation is designed to aide euphonium players in the process of learning tuba, enabling them to be as efficient as possible with both their time and money throughout the process. Topics covered include: difficulties unique to the euphonium/tuba double and approaches to overcome them, similarities and differences between euphonium and tuba playing (from the perspective of euphonium/tuba doublers), "reverse" benefits of euphonium/tuba doubling on the primary instrument, literature recommendations for euphonium/tuba doublers, and equipment considerations for euphonium/tuba doublers.