Gundam Seed - list

Openings:

Invoke ~ T.M.Revolution (ep. 1-13)
moment ~ Vivian or Kazuma (ep. 14-26)
Believe ~ Nami Tamaki (ep. 27-40)
Realize ~ Nami Tamaki (ep. 41-50)

Endings:

Anna ni Issho Datta no ni [あんなに一緒だったのに; We were so together, but] by See-Saw (ep. 1-26)
River ~ Tatsuya Ishii (ep. 27-39)
Find The Way ~ Mika Nakashima (ep. 40-50)