The pantropical distribution of the Tyranni, and their prevalence throughout the Neotropical landscape make them a particularly well suited taxon to investigate diversification patterns and processes at intercontinental and continental scales. A first step in understanding the evolutionary pressures that have propelled this diversification is to characterize patterns of diversification. To that end, many research labs worked together to build a well-resolved, species-level molecular phylogeny of the Tyranni. This phylogeny provides a conceptual foundation for a taxonomic revision of this suborder as well as supports ongoing analyses of character evolution and biogeography in this amazing group of birds.