) ▁ ▁Rap ha el ▁Sa adi q ▁— ▁producer , ▁guitar , ▁and ▁bass ▁( track ▁ 4 ) ▁ ▁Josh ua ▁Sad lier - B rown ▁— ▁engineer ▁( track ▁ 3 ) ▁ ▁T ats u ya ▁S ato ▁— ▁engineer ▁( tra cks ▁ 6 , ▁ 1 2 ) ▁ ▁Jack ▁S pl ash ▁— ▁producer ▁and ▁drum ▁programming ▁( track ▁ 6 ) ▁ ▁De vo ▁Spring ste en ▁— ▁producer ▁( track ▁ 3 ) ▁ ▁Gl enn ▁Stand ridge ▁— ▁co - produ cer ▁and ▁engineer ▁( track ▁ 4 ) ▁ ▁Charlie ▁St av ish ▁—   ass istant ▁engineer ▁( track ▁ 1 0 ) ▁ ▁Craig ▁Street ▁— ▁producer ▁( tra cks ▁ 8 , ▁ 1 0 ), ▁co - produ cer ▁( 6 ), ▁additional ▁production ▁( 4 , ▁ 1 2 , ▁ 1 3 ) ▁ ▁Swiss ▁Chris ▁— ▁drums ▁( tra cks ▁ 1 , ▁ 3 ) ▁ ▁C ater ina ▁S ze pes ▁— ▁viol in ▁( tra cks ▁ 4 , ▁ 6 ) ▁ ▁James ▁T anks ley ▁—   ass istant ▁engineer ▁( track ▁ 4 ) ▁ ▁Steve ▁Tir p ak ▁— ▁tr ump et ▁and ▁fl ug ab one ▁( track ▁ 1 1 ) ▁ ▁David ▁T orn ▁— ▁guitar ▁( tra cks ▁ 4 , ▁ 6 , ▁ 8 , ▁ 1 2 ) ▁ ▁Dave ▁To zer ▁— ▁producer , ▁engineer , ▁ac oust ic ▁guitar