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He hated that I did marching band while also studying "real music" and could spend half of a music lesson just listing why I shouldn't do marching. I stopped pursuing music because of him.\",\"course_id\":\"MUSPERF 221\",\"date\":\"2018-04-17 00:07:32 +0000 UTC\",\"difficulty_rating\":5,\"id\":\"3660e997d9b328fc5191848b\",\"instructor_id\":\"rmp:2002789\",\"instructor_name\":\"Mark Hetzler\",\"quality_rating\":2,\"source_review_id\":\"UmF0aW5nLTI5ODE4MDkx\",\"source_url\":\"https://www.ratemyprofessors.com/professor/2002789\"},{\"comment\":\"Hetzler is genuinely a nice guy, but he is super intense. I cried a few times and have feared a few of my lessons. He takes his work very seriously as any musician should, but if you can get through your first year, you should be solid. You never know what you will get walking into a lesson. 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Another student described him as a nice but serious instructor whose unpredictable lesson intensity caused them to cry, though they felt solid after the first year. 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This student stopped pursuing music because of the experience.\"}],\"task_hash\":\"9dea82ef7f2113a5605c1c6030c4f9b19967eb742cc93a78268fb92357d29f5c\",\"teaching_history\":[{\"citations\":[{\"course_id\":\"MUSPERF 221\",\"run_id\":\"20261014T203208-0851c9a1\",\"section_number\":89,\"source_course_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"source_record\":{\"entity_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"file\":\"tables/observations.parquet\",\"kind\":\"grades\",\"source\":\"madgrades\"},\"table\":\"section_grades_latest\",\"term_id\":\"1072\",\"type\":\"grade\"},{\"course_id\":\"MUSPERF 221\",\"run_id\":\"20261014T203208-0851c9a1\",\"section_number\":89,\"source_course_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"source_record\":{\"entity_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"file\":\"tables/observations.parquet\",\"kind\":\"grades\",\"source\":\"madgrades\"},\"table\":\"section_grades_latest\",\"term_id\":\"1074\",\"type\":\"grade\"},{\"course_id\":\"MUSPERF 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UTC\",\"review_id\":\"3660e997d9b328fc5191848b\",\"run_id\":\"20260907T155543-ce3781c4\",\"source_instructor_id\":\"rmp:2002789\",\"source_review_id\":\"UmF0aW5nLTI5ODE4MDkx\",\"source_url\":\"https://www.ratemyprofessors.com/professor/2002789\",\"type\":\"review\"}],\"text\":\"Mark Hetzler is described as skilled but difficult, with one student citing his negativity toward marching band as a reason to stop pursuing music.\"},{\"citations\":[{\"instructor_name\":\"Mark Hetzler\",\"review_date\":\"2019-04-08 17:58:08 +0000 UTC\",\"review_id\":\"3700dad20555321651d7eec3\",\"run_id\":\"20260907T155543-ce3781c4\",\"source_instructor_id\":\"rmp:2002789\",\"source_review_id\":\"UmF0aW5nLTMxNTUwMjAx\",\"source_url\":\"https://www.ratemyprofessors.com/professor/2002789\",\"type\":\"review\"}],\"text\":\"Another student finds him intense and scary, though genuinely nice and serious about work, noting that surviving the first year builds solid skills.\"},{\"citations\":[{\"course_id\":\"MUSPERF 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as super intense and emotionally difficult, with unpredictable dynamics that require students to adhere to formal address protocols.\"}],\"errors\":[],\"historical_context\":[],\"message\":null,\"offered\":true,\"profile_hash\":\"e59ddc7389015d0035b68cd195c939d475bf72b959b29cf12eab59b454ccaef1\",\"quick_take\":[{\"citations\":[{\"instructor_name\":\"Mark Hetzler\",\"review_date\":\"2018-04-17 00:07:32 +0000 UTC\",\"review_id\":\"3660e997d9b328fc5191848b\",\"run_id\":\"20260907T155543-ce3781c4\",\"source_instructor_id\":\"rmp:2002789\",\"source_review_id\":\"UmF0aW5nLTI5ODE4MDkx\",\"source_url\":\"https://www.ratemyprofessors.com/professor/2002789\",\"type\":\"review\"},{\"instructor_name\":\"Mark Hetzler\",\"review_date\":\"2019-04-08 17:58:08 +0000 UTC\",\"review_id\":\"3700dad20555321651d7eec3\",\"run_id\":\"20260907T155543-ce3781c4\",\"source_instructor_id\":\"rmp:2002789\",\"source_review_id\":\"UmF0aW5nLTMxNTUwMjAx\",\"source_url\":\"https://www.ratemyprofessors.com/professor/2002789\",\"type\":\"review\"}],\"text\":\"Mark Hetzler is a skilled musician who demands high seriousness, though students report conflicting experiences regarding his interpersonal style and intensity.\"},{\"citations\":[{\"course_id\":\"MUSPERF 221\",\"run_id\":\"20260907T155543-ce3781c4\",\"source_record\":{\"entity_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"file\":\"tables/observations.parquet\",\"kind\":\"grades\",\"source\":\"madgrades\"},\"table\":\"grades_latest\",\"term_id\":\"1094\",\"type\":\"grade\"},{\"course_id\":\"MUSPERF 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221\",\"run_id\":\"20260907T155543-ce3781c4\",\"section_number\":189,\"source_course_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"source_record\":{\"entity_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"file\":\"tables/observations.parquet\",\"kind\":\"grades\",\"source\":\"madgrades\"},\"table\":\"section_grades_latest\",\"term_id\":\"1262\",\"type\":\"grade\"},{\"course_id\":\"MUSPERF 221\",\"run_id\":\"20260907T155543-ce3781c4\",\"section_number\":89,\"source_course_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"source_record\":{\"entity_id\":\"57d780d2-96b7-3f2b-9d2f-b092e3650d6b\",\"file\":\"tables/observations.parquet\",\"kind\":\"grades\",\"source\":\"madgrades\"},\"table\":\"section_grades_latest\",\"term_id\":\"1264\",\"type\":\"grade\"}],\"text\":\"MARK HETZLER is recorded teaching in Fall 2006, Spring 2007, Fall 2007, Spring 2008, Fall 2008, Spring 2009, Fall 2009, Spring 2010, Fall 2010, Spring 2011, Fall 2011, Spring 2012, Fall 2012, Spring 2013, Fall 2013, Spring 2014, Fall 2014, Spring 2015, Fall 2015, Spring 2016, Fall 2016, Spring 2017, Fall 2017, Spring 2018, Fall 2018, Spring 2019, Fall 2019, Fall 2020, Fall 2021, Spring 2022, Fall 2022, Spring 2023, Fall 2023, Spring 2024, Fall 2024, Spring 2025, Fall 2025, Spring 2026. Recorded history may be incomplete and does not establish a future schedule.\"}],\"term_id\":\"1272\",\"term_name\":\"2026 Fall\",\"version\":2}","candidate_json":null,"error":null,"model":"nvidia/Qwen3.6-35B-A3B-NVFP4","model_revision":"1355db6a052410cfd62085d94b58866fd0f2c3c5","selected_for_release":false}]