As you well know, songs are made out of various chords linked together in a series called chord progressions. The more you know about the techniques of getting from chord to chord smoothly, the better, and one good way is to use “walk-ups”. They almost always work when the chord you are moving to is a perfect 4th higher (a frequent progression), but they also work in other situations. Watch this short video and you’ll get the idea:

For a TON of techniques like this, click on “101 Ways To Make Your Piano Playing Fuller!”