Stylistically, singer Ella Fitzgerald and trumpeter/singer Louis Armstrong had very different histories; he started out in Dixieland before branching out into classic jazz and swing, whereas Fitzgerald started out as a swing-oriented big-band vocalist before becoming an expert bebopper. But the two of them have no problem finding common ground on Ella and Louis Again, which is primarily a collection of vocal duets (with the backing of a solid rhythm section led by pianist Oscar Peterson). One could nit-pick about the fact that Satchmo doesn't take more trumpet solos, but the artists have such a strong rapport as vocalists that the trumpet shortage is only a minor point. Seven selections find either Fitzgerald or Armstrong singing without the other, although they're together more often than not on this fine recording. ~ Alex Henderson, All Music Guide