There's a song.
Alpha, beta, gamma, delta, epsilon and zeta
Eta, theta, iota, kappa, lambda, mu and nu
Xi, omicron, pi, rho, sigma, and tau
Upsilon, phi, chi, psi, and omega
Of course, that doesn't reflect new discoveries in the pronunciation of ancient Greek. If I remember correctly, Pi was pronounced "Pee"...hehehehehehe.