Ron De Strulle says that they met in Los Angeles in 1970 while Bowie's manager was trying to secure him a US record deal. While there, they worked on a number of demoes together, including 'To Be Love" - which is an airy and very psychedelic affair.
Ron De Strulle said - "He was looking to create a couple of signature styles to promote to the record companies. David brought ideas and lyrics and we cut some rough tracks. If I played a few bars on the keyboard, he could see the whole picture and he could integrate it into his own work."
You can download it for free here.