For guitarists, playing with trumpeters -- or any brass or woodwind players -- can be an experience fraught with growing pains and humility. But it's all well worth it, says Chicago guitarist Toby Summerfield. As a jazz guitarist whose collaborative tastes lean towards the experimental, Toby has played with a lot of trumpeters, and from them them he's learned a lot about his own instrument, including getting around intonation deficiencies.