I've been playing Darius Gaiden lately (awesome game btw, and thanks ahar ), and I noticed some of the music tracks are similar to those in G Darius.
I might have noticed some similar tracks in Darius R (and if I did I've forgotten them), but I can't remember any similarities in the SNES Darius games, like Super Nova and Twin.
Has it been like this since the beginning? Have there always been similar tracks going way back to Darius 1? Only other series that comes to mind when thinking that is Castlevania (Bloody Tears, etc.).
Darius, Darius II, Darius Gaiden and G Darius (the most 'important' games in the series) all have similar soundtracks to some extent, which is a good thing imo since the music is partially what makes the Darius series so special. I think all of them were composed by OGR of zuntata.
Not exaclty, the first Darius OST was composed by various Zuntata members (basically OGR did the stage songs, other people the Boss themes). OGR however worked on Darius II, Gaiden and G. alone (the other arcade Dariuses). If i remember well, however, he had different producers for every title (and his style also changed a lot over the years). Trivia: OGR won Gamest (the father of Arcadia) "best music award" for G.Darius.
"The only desire the Culture could not satisfy from within itself was one common to both the descendants of its original human stock and the machines [...]: the urge not to feel useless."