The Horlan Trio played with Horst Lecloux (accordion), Harri Grube (double bass), Werner Dimski (guitar) (in 1959 Dimski was replaced by Wolfgang Colly).
They were founded in 1952 in Berlin/Germany as vocal and instrumental group. Much of the tunes are composed by Horst Lecloux and much of the lyrics by Harri Grube. They performed in radio, TV, did records and were also part of two movies. Together with Herbert Klein they worked as "Picobellos" and with Siewert/Klein as Flamingos. All band members are dead.
Source: https://www.ddr-tanzmusik.de/index.php/Horlan-Trio