A 13-year-old would-be singer got the chance of a lifetime when she joined her godmother and star performer Heather Nova on part of her European tour.Indigo Adamson joined Nova on stage in Vienna as the songwriter performs on a 22-date tour to promote her new album. Indigo said she thought Nova was joking when she asked her to join her.She added: “She was saying she needed to take me on tour and have me open for her, but I didn’t think it was real.”The Bermuda High School pupil, who came top in the On Stage competition for young performers at the Bermuda Festival last year, also performed alongside Nova in Bermuda at the 2019 festival.However, Indigo said she found it tougher to appear on stage for about 500 Heather Nova fans in Vienna on October 15.She explained: “The first song and a half, I could barely sing. I was just looking at everybody staring at me.“But the other three songs, I went into the zone where I get lost and don’t stress any more. I was just trying to pay attention to the piano.”The Vienna appearance blotted out disappointment when Indigo was refused permission by the promoter to appear with Nova in Paris as at first planned because of European Union laws on minors, even though her name appeared on concert posters.Sacha Blackburne, Indigo’s mother, said: “It was a rollercoaster. Indigo kind of lost confidence because of the ups and downs. But then we got Vienna.”It was not the only upset on the trip; Indigo was forced to practice her songs in the foyer of the building where the family were staying in Paris after they locked themselves out of their apartment by accident.Ms Blackburne said: “The acoustics in the foyer ended up being a blessing. Everything had been so chaotic and disappointing, but the songs sounded amazing.”Indigo added: “I got my confidence back. I’d been stressing that I wouldn’t sound good. I’d never sung internationally and I didn’t want to mess up for Heather.”Indigo’s appearance took the Vienna audience by surprise as the youngster’s name did not appear on the concert bill.Indigo performed Ennio Morricone’s Gabriel’s Oboe, Nova’s song Mesmerised, Dark Waltz by Frank Musker and Puccini’s O mio babbino caro.Her mother said: “It was a great show. Heather came back on for encores and invited Indigo on for a few more songs.“Heather is amazing — she’s a builder-upper. She opens doors for people and gives them an opportunity.”Indigo said she hoped to continue performing, but had still to make her mind up. She added: “It’s hard to think about when the future is so far away.”She said: “It’s a bit stressful. Once you perform, it’s a reward that’s worth it.”Nova added: “I get very excited when I hear new young talent, and when I have the chance, I love to help promote them and give opportunities where I can.“In the past I have invited Bermudians Joy Barnum and Taylor Rankin to open for me. This time I invited the young Indigo Adamson to open for me in Vienna.”Nova said: “Indigo has a pure natural talent as a singer, but she also works hard at it. She has incredible stage presence and poise, and I’ve been so impressed by her performances in Bermuda.“Her singing is pitch perfect and she really sings from what is clearly a beautiful soul.”Nova added: “I knew it would be a big leap for her psychologically to play to an audience overseas, but the venue in Vienna was perfect as it was quite small; about 500 people, and a very cosy red-velvet theatre.”“The audience loved her, of course. Indigo is just at the very beginning of what could be a very a successful career, if she wants it.”