  Photometries of B, V, Rc, Ic, y, J, and Ks bands and low dispersion optical
spectroscopic observations of Nova V1280 Sco, started soon after the outburst,
are reported. We show that V1280 Sco is an Fe II nova and it is going through
the historically slowest spectroscopic evolution. The rapid decline observed in
the early phase was caused by formation of a dust shell. We estimate the
abundances of CNO using the absorption lines on a spectrum at pre-maximum, and
find over-abundances by [C/Fe] ~ 1.4, [N/Fe] > 2.0 and [O/Fe] ~ 1.1.
