Create a melancholic lo-fi track in the key of D minor, with a relaxed and introspective mood, perfect for meditation and study sessions. Incorporate the warm sound of vinyl crackle to add a vintage touch. Utilize an acoustic guitar to provide gentle melodies and chords, accompanied by a soulful saxophone for emotional depth. Enhance the low end with an 808 bass to provide a subtle groove, while keeping the overall tempo slow to maintain a chill atmosphere.