Of all the churches in Finland, only Kallio Church has both a Baroque and a French-Romantic organ.

The original German Schlag & Söhne organ in Kallio Church was placed behind the altar. After various unfortunate repairs and organ purchases, the church finally got a proper instrument in 1987: the Kangasala Urkurakentamo's shell organs represent the Baroque tradition.

It was only in 1995 that the church received a large instrument worthy of its name, a 48-voice French-Romantic baroque organ by Swedish firm Äkerman & Lund.

Both instruments are highly successful representatives of their respective styles. The church is therefore both a popular concert church and a training ground for organists studying at the Sibelius Academy of Fine Arts.