This official Propellerhead tutorial takes a look at using Blocks in Reason 5 and Record 1.5.

via PropellerheadSW:

In this microtutorial we’ll build up a track – starting from an 8 bar loop – and ending with a full song structure all thanks to Blocks, the pattern-based workflow feature in Reason 5 and Record 1.5.

Blocks is a quick way to brainstorm, experiment, arrive at an idea and take it to the next level of arrangement and production.