Kate Bush, the beginning of her carrier

Kate Bush was born on 30 July, 1958, and brought up in her family’s farmhouse in East Wickham in Kent. It was a creative – and supportive – environment. Her elder brothers Paddy and John were involved in the local folk scene; her father Robert, a doctor by profession, played the piano. Kate began learning piano at 11, and also played the organ and, early on, the violin. With encouragement from her parents and brothers it seemed inevitable that Kate would take her interest in music further, and she began writing her own songs at a startlingly young age. Young Kate’s talents were not kept in the dark. The family got in touch with Ricky Hopper, a university friend of John Bush’s. He’d worked for Transatlantic Records, and had industry contacts. Kate’s demos at this point were very basic; she was only 14, and hadn’t yet found her own style. Nothing came of Hopper’s initial attempts at drumming up interest in Kate. However, another of his university friends was Pink Floyd’s David Gilmour. The pair had become reacquainted at Hopper’s wedding, and Ricky sent the guitarist a copy of Kate’s demo. Wanting to give something back to new artists trying to make it in the music industry, Gilmour listened to the tape. It interested him enough to arrange to meet Kate and watch her perform. He drove down to the Bush residence and, without Kate knowing, listened to her playing some of her songs on the family piano.
Shortly after her 15th birthday David invited Kate along to his home studio to record some of her songs with him plus the bass player and drummer from the band Unicorn. The plan was to get Kate a publishing deal, and a tape was also recorded with just her and a piano. Despite the Floyd connection nothing came of either session in the short term, possibly because Bush’s songs were quite unlike what was happening in pop music at the time.
Gilmour, however, was still committed to getting the young songwriter a deal so he took her tape to Bob Mercer, the general manager of EMI’s pop division. This time David’s perseverance paid off, and after much negotiating the label signed her in July 1976, shortly before her 18th birthday. The label and Kate’s parents both felt that she needed time to grow and develop. EMI gave her a four-year contract, with the option to terminate it at the end of the second and third years if they felt she hadn’t developed the way they hoped. Kate was grateful for EMI’s softly-softly approach. Still, EMI acted on Gilmour’s suggestion and Andrew Powell was hired to produce and arrange Kate’s first album. The recordings for «The Kick Inside» took place in July and August 1977.
The rest is a known history.

Here is the full album "The Kick Inside":

 Parts from an article of the Classic Pop mag