Ralf GUM’s creating music since 1993. In 1997 he teamed up with mate CrisP. He worked with notable artists as Inaya Day, Michael Procter or the fascinating Concha Buika. He is well known for his succession of quality productions on labels such as Tommy Boy, Peppermint Jam, Flamingo Discos, Sole Music, Milk & Sugar, Infracom!…