  Partial compositeness as a theory of flavor in the lepton sector is assessed.
We begin presenting the first systematic analysis of neutrino mass generation
in this context, and identifying the distinctive mass textures. We then update
the bounds from charged lepton flavor and CP violating observables. We put
forward a $U(1)^3\times CP$ symmetry of the composite sector, in order to allow
the new physics to be not far above the TeV scale. This hypothesis effectively
suppresses the new contributions to the electron EDM and $\mu\to e\gamma$, by
far the most constraining observables, and results in a novel pattern of flavor
violation and neutrino masses. The CP violation in the elementary-composite
mixing is shown to induce a CKM phase of the correct size, as well as order-one
phases in the PMNS matrix. We compare with the alternative possibility of
introducing multiple scales of compositeness for leptons, that also allow to
evade flavor and CP constraints. Finally, we examine violations of lepton
flavor universality in $B$-meson semi-leptonic decays. The neutral-current
anomalies can be accommodated, predicting strong correlations among different
lepton flavors, with a few channels close to the experimental sensitivity.
