Question: The Indian musicologist who wrote the first modern treatise on Hindustani classical music influenced what person who played a key role in the development of All India Radio? 

full_context: Document 1: Jaspal Singh (singer): Jaspal Singh is an Indian singer who lent his voice to various Bollywood Actors of 1970's and 1980's. He was born in Amritsar and during his school and colleges days, he used to sing in various singing competitions. To further pursue his passion for singing he went to Mumbai where his sister used to stay. His talent was first and foremost recognised by well known female singer Usha Khanna during 1968. He was provided a chance to sing at a Professional level, however he did not get the recognition which he deserved. He struggled to make a career in singing and would often visit Amritsar, Delhi and Mumbai time and again. Due to pressure from his father he started practising law and started living in Mumbai. In spite of the hardships he never gave up. And then, a well known Music Composer, Ravindra Jain gave him the big break for a song in the movie called 'Geet Gata Chal' of 1975. After this song, he became a household name. His voice was unique and was unlike any other and he sang for hit movies like 'Nadiya ke paar', Ankhiyon ke jharokhon se','Sawan ko aane do' amongst others.
Document 2: Music in Varanasi: Music in Varanasi is a tradition linked to the ancient times of the Pauranic legends. Lord Shiva, who is reported to have established this city, was credited with developing music and dance forms. Legend also attributes that Renu, son of sage Vishvamitra and Mahagobind, was the precursors of music tradition in Kashi (Varanasi) when nymphs (Apsaras), Gandharvas and Kinnaras were the traditional practitioners of this art form, and saint Chaitanya and Vallabhacharya were the pioneers in spreading this music tradition in Varanasi. Notable musicians of Varanasi include the iconic sitar player Ravi Shankar, the Shehnai maestro Bismillah Khan, and the vocal music singer Girija Devi. Varanasi has joined the global bandwagon of UNESCO "Cities of Music" under the Creative Cities Network. Varanasi chosen in music category of creative cities network clearly signifies the rich musical heritage of this ancient city.
Document 3: K. J. Singh: Kanwarjit Singh Sawhney, a.k.a. K. J. Singh is an Indian audio engineer based in Mumbai who won the 54th National Film Award for Best Audiography and Filmfare Award for Best Sound Design with Shajith Koyeri and Subash Sahu for his work on the 2006 film "Omkara".
Document 4: Sarangadeva: Sarangadeva (1175–1247), also spelled Sharngadeva or Sarnga Deva, was the 13th-century Indian musicologist who authored "Sangita Ratnakara" – the classical Sanskrit text on music and drama. It is considered to be the authoritative treatise in Indian classical music by both the Hindustani music and the Carnatic music traditions.
Document 5: Sanhita Nandi: Sanhita Nandi is a prominent Hindustani classical vocalist of the Kirana Gharana. The central motif of her style is slow tempo "raga" development (voice culture, voice throw, and tonal application) and ornamented "sargams".Sanhita Nandi has rightly established herself as a leading exponent of Khayal, earning high acclaim from discerning critics and enthusiastic audiences on an international scale. Sanhita has developed a distinctive singing style based on firm grounding of traditional training (or taleem), combining pure lyricism with impeccable technique.To further enrich her repository of Kirana Lineage and traditional compositions, Sanhita continues to get trained under the able guidance of Ustad Mashkoor Ali Khan.The heart of her music is the slow, leisurely development of Raag Bhava in Merukhand style in Ati vilambit. The vistar is richly embellished by meend, harkat, and sargams. As the badhat gets slowly ornamented in the choicest pearls of melodic variations that build the sculpture of the raga, it slowly gets decorated into faster tempo where it befriends sargams, chota khayal, tarana and soft silky sapat taans .Extreme care is taken not to disrupt the Raag Bhava even in faster tempo .Even the phirat adds to the wet, warmth of feelings embedded in the raga.
Document 6: Vishwanath Rao Ringe: Late Pt. Vishwanath Rao Ringe 'Tanarang' born on 6 December 1922 was a Hindustani Classical Music vocalist and composer. He belonged to Gwalior Gharana of Hindustani Classical Music. He composed more than 2000 bandishs in about 200 ragaas, for which he has been enlisted in Limca Book of Records. He wrote couple of books in past named 'Sangitanjali' and 'Swaranjali' and a recent book `Aacharya "Tanarang" ki Bandishen` was published.
Document 7: Vishnu Narayan Bhatkhande: Pandit Vishnu Narayan Bhatkhande (Marathi: विष्णू नारायण भातखंडे)(August 10, 1860 – September 19, 1936) was an Indian musicologist who wrote the first modern treatise on Hindustani classical music (The north Indian variety of Indian classical music), an art which had been propagated earlier for a few centuries mostly through oral traditions. During those earlier times, the art had undergone several changes, rendering the raga "grammar" documented in scant old texts outdated.
Document 8: List of Indian classical music festivals: The following is an incomplete list of Indian classical music festivals, which encapsulates music festivals focused on Indian classical music. The origins of Indian classical music can be found in the Vedas, which are the oldest scriptures in the Hindu tradition dating back to 1500 BC. Indian classical music has also been significantly influenced by, or syncretised with, Indian folk music. There are two divisions in Indian classical music. Hindustani music is mainly found in North India. Carnatic music, from South India, tends to be more rhythdogs have bonessive and structured than Hindustani music. While some festivals such as the Carnatic event Tyagaraja Aradhana (founded in the 1840s) continue to focus on traditional Carnatic classical music, an emergent trend of the past few decades has been that of fusion music, where genres such as khyal and western music are intermixed to appeal
Document 9: Indian classical music: "Indian classical music is one of many forms of art music that have their roots in particular regional cultures. For other "classical" and art music traditions, see List of classical and art music traditions."
Document 10: Deva (composer): Devanesan Chokkalingam, popularly known as Deva, is an Indian film composer and singer. He has composed songs and provided background music for Tamil, Telugu, Malayalam and Kannada films in a career spanning about 20 years. Many know his gaana songs, written mostly using Madras Tamil. He is known as the "Father of Gaana Genre" in the Tamil film industry.
Document 11: Vishwa Mohan Bhatt: Vishwa Mohan Bhatt, also known as V. M. Bhatt (born 27 July 1950), is Grammy-winning Hindustani classical music instrumentalist who plays the Mohan Veena (slide guitar).
Document 12: Sangita Makarandha: Sangita Makaranda is an ancient work on classical music written by Narada. This work is a rare collection of definitions, descriptions and comments on all the essentials music by other ancient reputed authors from Bharata Muni to Sharangdeva. Its main feature is the treatiment of Ragas; categorizing them as male, female and neuter.
Document 13: Omkarnath Thakur: Omkarnath Thakur (24 June 1897 – 29 December 1967), his name often preceded by the title Pandit, was an influential Indian educator, musicologist, and Hindustani classical singer. He is famously known as "Pranav Rang", his pen-name. A disciple of classical singer Vishnu Digambar Paluskar of Gwalior gharana, he became the principal of Gandharva Mahavidyalaya, Lahore, and later went on become the first dean of the music faculty at Banaras Hindu University.
Document 14: Shrikrishna Narayan Ratanjankar: Shrikrishna Narayan Ratanjankar (December 31, 1900 – February 14, 1974) or S N Ratanjankar was a distinguished scholar and teacher of Hindustani classical music, from the Agra gharana. Foremost disciple of Vishnu Narayan Bhatkhande and Faiyaz Khan of Baroda State, he also remained principal of Bhatkhande Music Institute ("Bhatkande Sangeet Sansthan"), Lucknow, for many years, where he trained many noted names in the field of music.
Document 15: Jaideva Singh: Jaideva Singh (19 September 1893 in Shoratgarh, Uttar Pradesh – 27 May 1986 in Banaras) was an Indian musicologist and philosopher. He played a key role in the development of All India Radio where he was chief producer. He was influenced by the Indian musicologist Vishnu Narayan Bhatkhande.
ground_truth: Jaideva Singh