Because the song is in the public domain, you do not need to pay for it. Here are the best sources:
The "Ave Maria de Lourdes," often referred to as the or "Immaculate Mary," is one of the most recognizable Marian hymns in the world. Its simple yet soaring melody has become the definitive soundtrack for candlelit processions at the Sanctuary of Our Lady of Lourdes. History and Origins ave maria de lourdes partition
Highly recommended for Catholic parishes, school choirs, or anyone preparing music for Marian feasts. If you’re leading congregational singing, this arrangement will serve you well. Because the song is in the public domain,