Jamie Cullem Signed T-Shirt comes professionally framed with a certificate of authenticity on the back. Jamie Cullum is an English jazz-pop singer-songwriter and radio presenter. Although primarily a vocalist and pianist, he also accompanies himself on other instruments, including guitar and drums. He has recorded eight studio albums, three compilation albums, one live album and twenty-four singles. Since April 2010, he has presented a weekly Tuesday evening jazz show on BBC Radio 2.