Welsh singer Katherine Jenkins showed her support for her best friend by dedicating a song to the two-time cancer survivor at a concert on Sunday night (11Aug13). The opera star took to the stage at Audley End House in Essex, England to perform as part of the stately home venue's annual Summer Concerts series and singled out her friend, life coach Polly Noble, when she sang Judy Garland's classic track Over the Rainbow. The pair met in 2001 when Jenkins became Noble's singing teacher and the mezzo-soprano even wrote the foreword to her friend's book, The Cancer Journey, which chronicled her miraculous recovery after she was diagnosed with the disease twice before she turned 28. In a post on her Twitter.com page after the gig, Noble writes, "Having (Katherine Jenkins) dedicate Somewhere Over The Rainbow (sic) to me & sing it to thousands at Audley End 2nite (sic) was a phenomenal surprise! Thank u (sic) xxx" to which her long-time friend replied, "Because you're worth it."