NAHANT – Shea Mavros started performing at Pingree School, studied voice in Boston and Rome, and sang opera in New York City. But this weekend, she is performing for her favorite crowd – her hometown friends and fans.”It doesn’t have to be sold out for me,” Mavros, a full-lyric soprano, said. I want people to be there who want to be there; it’s not like somebody’s going to discover me in a chapel in Nahant. But I think it’s an amazing place, there’s something really special about living here.”Mavros will perform a solo concert, “Summertime in the Chapel,” Saturday at 7:30 p.m. in the Ellingwood Chapel. She said it was her sixth or seventh concert she has given in Nahant since she began pursuing a music career, but that this show would be a very different concert than she has performed for Nahant audiences in the past.Mavros’ first concert in Nahant was in 1998. She had left Boston University to study voice privately in Rome with Nahant native Anne English-Fantucci and said she decided that she wanted to give a voice recital like other vocal students. By 2008, she had moved to New York City and was teaching school in addition to performing in a local opera company. Her local concert reflected her circumstances again – she produced what she said was the first opera to be performed in Nahant, a production of La Boheme.”It was a huge undertaking,” she said. “I was singing Mimi, and also staged and directed it, did the budget. We didn’t have a chorus or orchestra, but it was fully staged, fully costumed and I even paid the actors. I think the budget was less than $4,000.”For Saturday’s concert, Mavros is taking a little of a break from the opera and performance world. Although she said she still travels regularly to New York for vocal lessons and auditions, she is glad to be back in Nahant and returning to an interest in music education through a position in community outreach at Berklee School of Music.As for her repertoire, she said she is excited to be able to sing songs she loves – rather than only songs that she has intently studied – and songs that people know. She has divided the program among selections popularized by Julie Andrews, songs from popular Broadway shows including Show Boat, Cats, West Side Story and Les Miserables, and operetta tunes from Kurt Weill and George Gershwin.”It’s a tough career and it’s nice to be able to do it because you want to do it,” Mavros noted. “It’s often not an encouraging business. “I’ve always had a day job – most people do. If you’re lucky, you get to incorporate (music) into your job.Plus, Mavros said the most rewarding aspect of performing in Nahant is seeing the joy that the music brings to friends.It’s a rare gift for an opera singer, her accompanist Matthew Larson said.”She’s an amazing communicator,” Larson said. “Her ability to reach an audience and convey text in a very clear and fun way, I think allows her to do a program like this one, which is mostly Broadway and popular tunes, as well as opera.”But even in front of her hometown crowd, Mavros said that she still gets nervous.”It’s just little things and it’s adrenaline too,” she said. “Excitement and nervousness can be very similar. But I love doing this. You just get a chance to give people a great experience they don’t get all the time.”