The Polytech Choir is an academic male choir established in 1900. The majority of the choir's members are engineering students and graduate engineers from Aalto University. The activities of the choir include traditional spring and Christmas concerts, frequent recordings, and performances with leading Finnish symphony orchestras. The choir's current artistic director and conductor, since 2024, is Tatu Erkkilä.
PK's a cappella repertoire consists mainly of classical music, ranging from Renaissance madrigals to the Romantic era and contemporary works, and also includes occasional forays to other genres such as jazz. A centerpiece of the choir's choral symphonic repertoire has been Jean Sibelius' symphonic poem Kullervo. In 2015, the choir made its debut at the BBC Proms, performing Sibelius' Kullervo with the BBC Symphony Orchestra conducted by Sakari Oramo. In addition to performances a cappella and with orchestras, the choir, its quartets and other smaller ensembles frequently perform at private, corporate and academic festivities.