The Kena Upanishad (Sanskrit: केन उपनिषद्, Kena Upaniṣad), or the Kenopanishad (Sanskrit: केनोपनिषद्, Kenopaniṣad) is one of the earlier, "primary" Upanishads, a genre of Hindu scriptures, commented upon by Shankara and Madhvacharya. It is associated with the Samaveda where it is found inserted into the last section of the Jaiminiya Upanishad Brahmana. It figures as number 2 in the Muktika canon of 108 Upanishads.

The Kenopanishad derives its name from the first word Kena , meaning ‘by whom’. It belongs to the Talavakara Brahmana of Sama Veda and is therefore also referred to as Talavakara Upanishad. It has four khaṇḍas (sections), the first two in verse and the other two in prose. Adi Shankara, who has written commentaries on 12 Upanishads, is believed to have written two commentaries on Kenopanishad. One is called Kenopaniṣad Padabhāṣya and the other is Kenopaniṣad Vākyabhāṣya.

Not that which the ear can hear, but that whereby the ear can hear: know that to be Brahman the eternal, and not what people here adore;

Kena (also pronounced kana) is a village in Vilnius district municipality, Lithuania. It is located on the state border with Belarus and has railway customs for all passenger trains from/to Belarus and Russia, including transit trains to Kaliningrad Oblast. According to the census of 2001, Kena had 90 residents.

Ravi Shankar (Bengali: রবি শংকর; born Robindro Shaunkor Chowdhury on 7 April 1920), often referred to with the title Pandit, is an Indian musician and composer who plays the plucked string instrument sitar. He has been described as the most known contemporary Indian musician by Hans Neuhoff in Musik in Geschichte und Gegenwart.

Shankar was born in Varanasi and spent his youth touring Europe and India with the dance group of his brother Uday Shankar. He gave up dancing in 1938 to study sitar playing under court musician Allauddin Khan. After finishing his studies in 1944, Shankar worked as a composer, creating the music for the Apu Trilogy by Satyajit Ray, and was music director of All India Radio, New Delhi, from 1949 to 1956.

In 1956, he began to tour Europe and America playing Indian classical music and increased its popularity there in the 1960s through teaching, performance, and his association with violinist Yehudi Menuhin and George Harrison of The Beatles. Shankar engaged Western music by writing concerti for sitar and orchestra and toured the world in the 1970s and 1980s. From 1986 to 1992 he served as a nominated member of the upper chamber of the Parliament of India. Shankar was awarded India's highest civilian honor, the Bharat Ratna, in 1999, and received three Grammy Awards. He continues to perform in the 2000s, often with his daughter Anoushka.