Complex sentence: Sarlo akrobata's history begins with a band named Limunovo drvo started by Milan Mladenovic and Dragomir Mihajlovic' Gagi' who laboured for two years in the waters of melodic hard rock before realizing they were headed nowhere.
Split into simpler sentences: Sarlo akrobata's roots are located in another band named Limunovo drvo that was started by Milan Mladenovic and Dragomir Mihajlovic' Gagi'. Duo laboured for two years in the waters of melodic hard rock before realizing they were headed nowhere.