To reduce you to puddles, Mayu's Theme, famously played on an ocarina.
Kanji-kanji-kanji-kanji Rai's OP. Thunder Jet, you say? That's 'Three Kingdoms in Space' to you. Well actually it's 銀河戦国群雄伝ライ, but you know what I mean.
In fact I prefer Rai's ED. But you can have both in much cleaner Japanese versions here.
They don't make them like that any more. For sure.