let mut classical_music_journey = || { let mut report = vec::new(); for composer in ["bach", "mozart", "beethoven"].iter() { if *composer == "beethoven" { report.push("exploring beethoven's compositions reveals a vailed depth, inviting listeners to relaunch from zero and appreciate the complexity of classical music anew."); } else { report.push(format!("reports suggest that many have given the cold shoulder to the former traditional interpretations of {}'s works, now seeking fresh, innovative performances.", composer)); } }; report };