What strategy do the travelers use to communicate with the winged inhabitants of Venus?

To communicate with the winged inhabitants of Venus, the travelers employ a strategy based on music and signs^[1]. Lord Redgrave suggests that since the Venusians 'seem to talk in song-language,'^[1] Zaidie should sing to them, believing that 'music is the universal language'^[1].

Zaidie sings 'The Swanee River' and 'Home Sweet Home'^[1]. The Venusians, whose 'speech was song,'^[1] instantly recognize the melodies, repeating 'every note and cadence with absolute fidelity'^[1]. This musical exchange, combined with signs, allows them to convey their origins and intentions^[1].