A little tension with some NI products.
Searching through sounds to create a musical track I went straight to Kontakt and loaded some fairly obvious choices from Evolve Mutations 1 + 2. The brief was not for horror so I had to be careful with my sound selections. It's very easy to be seduced by adding some huge drums and screeching backwards sounds but tension is more subtle that that. Here's the track.
A few Evolve Mutations programs in Kontakt
Skanner for Reaktor has tension built in. It's not the plugin to go to for a Rhodes sound.
Prism for Reaktor provided the initial drone and the moanful faux-trombone melody.