Carlos Aguilar Praised for its immersive approach to mapping out a drummer’s confrontation with hearing loss, writer-director Darius Marder’s “Sound of Metal,” now contending for six Academy Awards, features a singularly story-driven use of sound.Part of that sonic alchemy proudly bears a “Made in Mexico” stamp. The film is nominated for best sound, and three of the nominated artisans are Mexican re-recording mixers Jaime Baksht, Michelle Couttolenc, and Carlos Cortés Navarrete.