Complex sentence: After the end of the tour, The Sisters began to prepare themselves for the album recordings, but first they entered Maida Vale Studios on 19 June to record a John Peel Session for BBC Radio 1.
Split into simpler sentences: After the end of the tour The Sisters began to prepare themselves for the album recordings. But first they entered Maida Vale Studios on 19 June to record a John Peel Session for BBC Radio 1.