▁album , ▁R AL 9 0 0 5 ▁on ▁the ▁Four ▁Music ▁label ▁in ▁ 2 0 0 1 , ▁which ▁was ▁later ▁lic ensed ▁to ▁Der rick ▁Carter ▁and ▁Luke ▁Sol omon ' s ▁Classic ▁Record ings ▁label . ▁T ief sch war z ▁continued ▁to ▁release ▁on ▁Classic ▁until ▁its ▁collapse ▁in ▁ 2 0 0 5 , ▁as ▁well ▁as ▁re le asing ▁on ▁labels ▁such ▁as ▁Fine ▁and ▁International ▁De e J ay ▁G ig olo ▁Records . ▁Many ▁of ▁their ▁tracks ▁have ▁been ▁lic ensed ▁to ▁comp il ations , ▁from ▁the ▁S tere o ▁S ush i ▁series , ▁to ▁comp il ations ▁for ▁Bug ged ▁Out !, ▁Get ▁Phys ical ▁and ▁Renaissance , ▁and ▁in ▁ 2 0 0 6 , ▁they ▁released ▁a ▁mix ▁of ▁their ▁own ▁for ▁the ▁Fab ric ▁( Lond on ) ▁mix ▁series . ▁ ▁Their ▁sound ▁is ▁considered , ▁at ▁least ▁by ▁those ▁who ▁have ▁followed ▁them ▁from ▁their ▁Classic ▁days , ▁to ▁have ▁changed ▁somewhat ▁over ▁the ▁last ▁few ▁years . ▁Instead ▁of ▁their ▁original ▁deep , ▁m ellow ▁house , ▁T ief sch war z ▁now ▁represent ▁a ▁g rit ty ▁and ▁ed gy ▁electro ▁house ▁sound , ▁their ▁more ▁recent ▁tracks ▁gain ing ▁recognition ▁from ▁the ▁lik es ▁of ▁Ivan ▁Sm agg he , ▁Touch é , ▁S asha ▁and ▁D anny ▁How ells . ▁ ▁Ali ▁and ▁Bast i ▁Schwar z ▁have ▁been ▁trav elling ▁Europe ▁as ▁DJ s ▁since ▁ 1 9 9 5 ,