{'fraction_non_alphanumeric': 0.013748854262144821, 'fraction_numerical': 0.0, 'mean_word_length': 5.312138728323699, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Computational analysis of melodic mode switching in raga performance

Melodic mode shifting is a construct used occasionally by skilled artists in a raga performance to enhance it by bringing in temporarily shades of a different raga. In this work, we study a specific North Indian Khyal concert structure known as the Jasrangi jugalbandi where a male and female singer co-perform different ragas in an interactive fashion. The mode-shifted ragas with their relatively displaced assumed tonics comprise the identical set of scale intervals and therefore can be easily confused when performed together. With an annotated dataset based on available concerts by well-known artists, we present an analysis of the performance in terms of the raga characteristics as they are manifested through the interactive engagement. We analyse both the aspects of modal music forms, viz. the pitch distribution, representing tonal hierarchy, and the melodic phrases, across the sequence of singing turns by the two artists with reference to representative individual performances of the corresponding ragas.