Telmo began his musical studies when he was 7 years old with José Américo Belinha in Tuna Musical de São Paio de Oleiros. Then, he started studying with Hélder Tavares in Academia de Música de Paços de Brandão, where he finished highschool with distinction. He attended several masterclasses with António Saiote, Nuno Pinto, Florent Héau, François Benda, Kilian Herold, Harri Mäki, among others.

He was awarded with many prizes in national and international competitions, such as 1^st Prize in “Concurso Luso-espanhol” (Fafe), 1^st Prize in International Clarinet Competition APC, Golden Prize in Vienna International Music Competition, 1^st Prize in North International Music Competition and 1^st Prize in “Prémio Jovens Músicos”. In this very competition, he was awarded with three more prizes, the Young Musician of the Year (“Maestro Silva Pereira Prize”), European Union of Music Competitions for Youth Prize, and “Prémio Círculo Richard Wagner”.

As far as his orchestral experience is concerned, he took part in Jovem Orquestra Portuguesa (2013-2017), Estágio Gulbenkian para Orquestra (2017 and 2018), Gustav Mahler Jugendorchester (2016 and 2018), Neue Philhamornie München (2018) and Schweizer Jugendsinfonieorchester (2018). He also collaborated with Orquestra Filarmónica Portuguesa, Luzerner Sinfonieorchester and Royal Concertgebouw Orchestra. In 2019 he won the academy position in Luzerner Sinfonieorchester and 1^st Soloist co-principal in Orquestra Gulbenkian. He is currently studying in Hochschule für Musik Basel in Switzerland with François Benda.