Watch Soft Cell: Say Hello, Wave Goodbye for Free: How to Stream the Movie Online at 123Movies. . Synth-pop pioneers Soft Cell reunited for one last time at London’s The O2 on Sunday 30th September 2018 – their first UK show for 15 years. Marc Almond and Dave Ball performed together for a one-off show, ‘Say Hello, Wave Goodbye’, as they celebrate their 40th anniversary as a duo with their first UK show since 2003. This was the band’s last EVER show.