Sheppard followed up their hit with the single 'Something's Missing' and also released an EP, Sheppard, in 2012. You can find the full lyrics to the song here.
Their song 'Geronimo' is the first single released from the band's first album Bombs Away, an eleven track album which was awarded four out of five stars by Rolling Stone magazine. Sheppard are from Brisbane, Australia and take their name from the three Sheppard siblings, Amy, George and Emma, who form half of the band's line-up. The lyrics, rather than 'so say jurambo, say jurambo, say jurambo, say jurambo, bombs away bombs away bombs away,' are actually 'Can you feel my love? Bombs away, bombs away, bombs away, say Geronimo!' The song you are thinking of is 'Geronimo' by Australian pop group Sheppard.
