graph TD
A[Start: YouTube URLs Input] --> B[Download Process]
B --> C1[Download MP3 #1]
B --> C2[Download MP3 #2]
B --> C3[Download MP3 #3]
C1 --> D1[MP3 URL #1]
C2 --> D2[MP3 URL #2]
C3 --> D3[MP3 URL #3]
D1 --> E[Consolidation Process]
D2 --> E
D3 --> E
E --> F[Final Output: Unified MP3 URLs List]
subgraph Process Flow
B
C1 & C2 & C3
D1 & D2 & D3
E
end