Odd Judas Priest Question

Does anyone know if JP's "Sad Wings" album was big in Japan back in the late 70's? I just wonder why the band chose to do 4 songs off that particular album on "Unleashed" when they had 3 albums of material after Sad Wings.......can anyone shed some light on this?

I am not sure if they were huge in Japan at this time period, but I think they included so many songs from that album is because at the time this live album was released the label that issue 'Sad Wings' was defunct and it was diffcult album to obtain. I think the songs were added to set and live album to give this songs a chance to be heard and a second life.

The Manny has spoken.