Lemon-bellied Flycatcher males do undertake extended aerial song displays when advertising their territories and they are also very capable mimics, but I have yet to record either of these. Sample LS100116 is a small part of a long singing session of a perched bird at Adelaide River in the N.T. Sample 130-300 from Jourama Falls in Queensland is an example of antiphonal singing by a pair - who was whom I couldn't tell because you can't sex Lemon-bellied Flycatchers by eye but according to Richard Noske, usually the female initiates the call and the male gives a muted response.