So, I've never played Ar Tonelico, but I happen to have the soundtrack for it on my computer. As I was listening to it, I felt that the music was rather similar in style to Okage's, particularly the song "Overcoming Hardships". So, curious, I went out to see if any of the same people had worked on composing the music. However, based on what Moby Game's got listed for Okage and Wikipedia for Ar Tonelico, none of the composers matched up... has anyone else thought this about the music for these two games, or am I just crazy? XD
Also, I'd be curious to know if the team that did Okage has worked on any other games... I remember one was mentioned here awhile ago.