A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic about Liszt and his connection to music. It does not refer to any previous information and sets the stage for the rest of the text. It is a general statement about Liszt's natural talent in music. Why other lines are not chosen? Paragraph 2 starts with 'Besides,' which is a conjunction. Paragraph 3 starts with 'His,' which is a pronoun that refers back to Liszt. Paragraph 4 starts with 'One of his inventions,' which uses 'his' and assumes prior knowledge. Paragraph 5 starts with 'Les Preludes,' which is specific and assumes knowledge of the works.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it summarizes Liszt's work and gives examples. It wraps up the discussion about his contributions to music.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects with Paragraph 1 because it continues to talk about Liszt. The word 'Besides' shows that it adds more information about Liszt's skills.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects with Paragraph 2 because it explains more about Liszt's music. It shows how his skills as a composer were important and gives details about his music.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it talks about one of Liszt's important contributions to music. It explains a specific invention that relates to his adventurous music.
• Pair 4 (Paragraph 4 → Paragraph 5): Paragraph 5 connects with Paragraph 4 because it gives examples of Liszt's works. It shows how his invention of the symphonic poem is part of his larger body of work.