Complex sentence: It was launched at Manchester's Market Street HMV store where they performed and sold their first albums bought by Andrew Harris at 12.01am and signed and noted by Liam as the first album to be sold.
Split into simpler sentences: It was launched at Manchester's Market Street HMV store where they performed and sold the first of their albums. The first album was bought by Andrew Harris at 12.01am which was signed and noted by Liam as their first album to be sold.