Complex sentence: Watson made a demo tape with McGroarty which found its way to Keith Hopwood at Pluto Music, who signed them, demoed their songs, and introduced her to music publisher and manager Deke Arlon.
Split into simpler sentences: Watson made a demo tape with McGroarty which found its way to Keith Hopwood at Pluto Music. Hopwood signed Watson and introduced her to music publisher and manager Deke Arlon.