Conversation so far:
Who is Kate Bush?
Kate Bush is an English singer-songwriter and record producer.
What did Kate Bush do?
In 1978, aged 19, Kate Bush topped the UK Singles Chart for four weeks, becoming the first female artist to achieve a UK number one with a self-written song.
What song is Kate Bush famous for?
In 1978, aged 19, Kate Bush topped the UK Singles Chart for four weeks with her debut single Wuthering Heights.

Question: What was her debut album?
Self-contained rewrite: What was Kate Bush's debut album?