The results of linear augmented-plane-wave electronic structure calculations for the perovskite-type compounds BaPb1-xxBixO3 are reviewed in the light of recent experimental measurements of the x-dependent electronic properties near EF(x). In the metallic regime xN(EF,x) and specific-heat data. The experimental-theoretical ratio suggests an electron-phonon enhancement factor (1+λ) ≈2. A similar comparison between the calculated and observed free-carrier plasma energies \varOmegap(x) yields ∼ 10% agreement over the entire alloy series.