Despite the poor quality of recordings and the lack of information on disc covers, Electrecord released a number of collection discs of which the most successful were the Formaţii de muzică pop series (translated "pop music bands"), which became Formaţii rock – "rock bands" starting with number four.
The fact that Electrecord was able to release several compilation albums despite subpar recordings and limited information on disc labels led to the success of the Formaţii de muzică pop series, which later evolved into Formaţii rock – "rock bands" with its first installment.