After listening to the Suikoden 4 music I have decided it wasn't that bad at all.
Especially the battle themes and some of the more dramatic pieces have a typical, retro-suikoden style. The music played inside the ship was also nice in a way.
It's true that Suikoden 3 propably had some of the worst music of the games, but it also had some great music, like the army battle theme, the tension and crisis themes and the typical "preparing for battle" and "inspriation" music.
Suikoden 4 had some of the absolute worst peace of crap but overall that game had great music perfect for a Suikoden game. I think I judged the music too hard initally, because I hated the game.
I still hate for example the Middleport song.
It would be a really nice thing if the music in Rhapsodia (the tracks which aren't remasters of Suikoden 4 music, that is) and Suikoden 5 returned to the more ethnic roots of Suikoden music.
Those who fear dying deserves death.