The official Sweet 7 (Jade Ewen version) is a footnote. The Sampler Featuring Keisha Repack is the canon.
The "repack" or re-recording of Sweet 7 occurred after Keisha Buchanan was asked to leave the group in September 2009. Because the album was already complete and a sampler had been distributed to media and radio, the label was forced to have Jade Ewen re-record Keisha's parts in a rushed process. Critics often refer to the versions found on this sampler as the "true" version of the album, noting Keisha’s stronger vocal performance compared to the final commercial release. About a Girl