Soprano Sirkka Lamminen makes regular appearances at the operas and concerts in Finland, Estonia, Italy, France, Germany and Switzerland. Sirkka Lamminen is the artistic director of the Toivo Kuula Singing Competition in the city of Alavus in West Finland. Sirkka Lamminen is currently preparing for a Doctoral degree in the Arts Programme at the DocMus unit of the Sibelius Academy.

Sirkka Lamminen's roles include, for example, Queen of the Night in Mozart's Magic Flute, Rosina in Rossini's Barber of Seville, Violetta in Verdi's La Traviata, Gilda in Verdi's Rigoletto, Donna Elvira in G. Gazzaniga's opera Don Giovanni and Romilda in Händel's Serse (Xerxes). She has received praise for her Mozart roles including the Queen of the Night in The Magic Flute, Donna Anna in Don Giovanni,  Blonde and Konstanze in the opera Abduction from the Seraglio and the title role in Zaide. Sirkka Lampimäki has collaborated with such conductors as Jorma Panula, Mikko Franck, Hannu Lintu, Adam Fisher, Leif Segerstam, Arvo Volmer, Anna-Maria Helsing, Markus Lehtinen, Nello Santi, Jüri Alperten, Peter Bauer, Luke Dollman,  Alberto Hold-Garrido, Veli-Antti Koivuranta, Kurt Kopecky, Hannu Lintu, Mikk Murdvee, Jorma Panula,  Anu Tali, Kari Tikka, Ville Matvejeff and Ralf Weikert.

Sirkka Lamminen has won prizes in several singing competitions: 3.prize in Vox Unica International Singing Competition in Perniö, 1.prize in Kangasniemi National Singing Competition, 2.prize in Timo Mustakallio Singing Competition at the Savonlinna Opera Festival, 3.prize in Lappeenranta National Singing Competition. Sirkka Lamminen has been awarded grants by The Arts Council of Finland, the Finnish Cultural Foundation, Jenny and Antti Wihuri Foundation, Pro Opera Foundation Helsinki and Pro Opera Foundation Tampere, Selim Eskelin Foundation, Arvo Autio Foundation and Alfred Kordelin Foundation. In 2007 Sirkka Lamminen was awarded with a Cultural Prize by the city of Alavus and the same year she received the special Prize of the Sibelius Familys Estate in the first International Sibelius Singing Competition.

Sirkka Lamminen has graduated from the Conservatory of Central Finland. She studied further at the International Opera Studio in Zürich and in Sibelius Academy. During her studies at the International Opera Studio Zürich she participated master classes of distinguished opera singers such as Edita Gruberova, Elisabeth Schwarzkopf and Thomas Hampson. She has also studied with Horst Günter, Damian Whiteley, Mitsuko Shirai and Yi Ping Lee. Sirkka Lamminen graduated as a Master of Music from the Sibelius Academy under Professor Seppo Ruohonen in 2004. She has undertaken further studies in master classes with such singers as Matti Salminen, Edda Moser, Udo Reinemann, Tom Krause and Renata Scotto and with vocal coaches Rilla Kyykkä, Erkki Korhonen, Jeffrey Goldberg and Ken Noda among others.  She has also studied abroad with Roland Hermann and Norma Enns. 

 Sirkka Lamminen is not only familiar to opera audiences, but has also achieved popularity as a concert soloist. Sirkka Lamminen has given Lieder recitals and she has appeared with many orchestras and choirs singing repertoire such as Requiem (Verdi), Creation (Haydn), Jubal (Sibelius), Savannah la Mar (Aarre Merikanto), Saint John Passion and Saint Matthew Passion (J. S. Bach), Mass in C minor and Exsultate jubilate (W. A. Mozart) and Theresiemesse (J. Haydn). Her extensive lied and church music repertoire has taken her to performances in St Petersburg, Porto, Lisbon and Madrid, among others.

Sirkka Lamminen is congenial performer of contemporary vocal music. Her spirited and virtuosic interpretation of the role of Chief Inspector Giovanna was highly acclaimed at world premiere of the opera La Fenice by Kimmo Hakola in 2012 at the Savonlinna Opera Festival. Her debut at Alice Tully Hall at the Finnish Voices Festival 2010 performing Esa-Pekka Salonen's Floof with Kari Kriikku and the musicians of the Chamber Music Society of Lincoln Center received jubilant reception from the audience and from the critic of the New York Times Mr. Allan Kozinn. Sirkka Lamminen has commissioned and premiered several contemporary vocal works including Miika Hyytiäinen's pastiche opera Madame Herz und Herr M. 2009