Complex sentence: This led to the band performing in the "NME" sponsored Unsigned Showcase event, which in turn led them to a recording contract with Nude Records, following a bidding war between various record labels excited by the band's powerful live presence.
Split into simpler sentences: This led to the band performing in the "NME" sponsored Unsigned Showcase event. In turn, the Unsigned Showcase appearance led Ultrasound to a recording contract with Nude Records, following a bidding war between various record labels excited by the band's powerful live presence.