Lawson perform debut single 'When She Was Mine' at the Summertime Ball 2012. This image appears in the gallery:Lawson Live At The Summertime Ball 2012 - Pictures 2. Lawson perform debut single 'When She Was Mine' at the Summertime Ball 2012. 6 images See the full gallery: Lawson Live At The Summertime Ball 2012 - Pictures