Grooveliker and Jakub Rene Kosik are "Lincoln Six Echo". They use different names depending on the musical style they deal with at a given moment, their musical interests ranging very widely from house through tech-house and electro/electroclash to funky techno/techno and sometimes also even harder techno beats and experimental/industrial noises. Grooveliker is one of Poland's top djs - voted number 3 in Top100 best Polish DJs by the readers of Poland's major clubbing/dance music magazine called "Laif" in 2002, voted number 4 in 2003, number 8 in 2004 and number 5 in 2005; he is the only dj apart from Angelo Mike and Glasse who has been in Top Ten of this dj chart every year since its very beginning; also chosen one of Poland's top 5 DJs in Polish Dance Awards.
Jakub Rene Kosik is one of Poland's most respected underground djs and live-act artists, and a multi-talented music producer. He has appeared at numerous parties all over Poland, including major events such as Creamfields Poland or Water Festival, this November playing also at Mayday Poland. He has also appeared along many respected foreign artists and international stars at many indoors/outdoors events.