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https://forum.musicasacra.com/forum/discussion/21017/sanctus-for-mass-ix-from-the-hymnal-1940/p1 Sanctus for Mass IX from the Hymnal 1940 - MusicaSacra Church Music Forum mass ix from the church music sanctus hymnal https://www.aanda.org/articles/aa/abs/2025/05/aa55385e-25/aa55385e-25.html ASTRAEUS - IX. Impact of an evolving stellar initial mass function on early galaxies and... astraeus ix impact evolving stellar