import re
myconvo = """speaker1: hello
speaker2: hello (clears throat), let me show you something Ted Cruz said last week
(begin audio clip)
Ted Cruz (R-TX): My dad did not shoot JFK, why do people keep saying that?
(end audio clip)
speaker1: now isn't that interesting"""
regex = r"\r?\n[^\S\r\n]*[([].+[)\]](?:\r?\n(?![^\S\r\n]*[\[\]()]).*)*\r?\n[^\S\r\n]*[\{(].+\n"
result = re.sub(regex, "", myconvo)
print (result)
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