L och ▁L om ond ." ▁The ▁group ' s ▁name ▁would ▁vary ▁with ▁time ▁and ▁depending ▁on ▁who ▁was ▁cred ited ▁as ▁session ▁leader : ▁John ▁Kir by ▁and ▁His ▁O ny x ▁Club ▁Boys , ▁John ▁Kir by ▁and ▁His ▁Orchestra , ▁B uster ▁Ba iley ▁and ▁His ▁Rh ythm ▁B ust ers , ▁B uster ▁Ba iley ▁and ▁His ▁Se xt et . ▁The ▁band ▁would ▁become ▁one ▁of ▁the ▁more ▁significant ▁" small ▁groups " ▁in ▁the ▁Big ▁Band ▁era ▁▁ ▁and ▁was ▁also ▁notable ▁for ▁making ▁the ▁first ▁recording ▁of ▁Sh a vers ' s ▁song ▁" Und ec ided ". ▁▁ ▁V oc als ▁were ▁often ▁performed ▁by ▁Max ine ▁S ull ivan , ▁who ▁became ▁Kir by ' s ▁second ▁wife ▁in ▁ 1 9 3 8 ▁( div or ced ▁ 1 9 4 1 ). ▁ ▁In ▁ 1 9 3 8 ▁four ▁members ▁of ▁the ▁group ▁( S ha vers , ▁Ba iley , ▁K yle ▁and ▁Kir by ) ▁participated ▁in ▁two ▁recording ▁sessions ▁for ▁V ocal ion ▁Records ▁( 1 1 ▁May ▁and ▁ 2 3 ▁June ) ▁accomp any ing ▁singer ▁Bill ie ▁Hol iday ▁as ▁Bill ie ▁Hol iday ▁and ▁her ▁Orchestra . ▁ ▁Kir by ▁t ended ▁toward ▁a ▁l ighter , ▁class ically ▁influenced ▁style ▁of ▁jazz , ▁often ▁referred ▁to ▁as ▁chamber ▁jazz , ▁which ▁has ▁both ▁strong ▁def enders ▁and ▁ar dent ▁critics . ▁He ▁was ▁pro l ific ▁and ▁popular ▁from ▁ 1 9