Summarize the following:
A composition's tonality states the key and whether it is Major or Minor. At an early stage of composition, a key could be as simple as making an arbitrary choice, but it will have the biggest impact on the sound of your composition. If you finish your work later on and want to try it out in different keys, you should do so, but be forewarned that it takes a fair amount of work to transpose a composition note by note into another key. The piano keyboard has been explored to death. Every possible combination has been tried and studied at this point. With that, theory can suggest the most appropriate chords. The most famous of these is the I-IV-V-vi progression (the lower case denotes a Minor chord). The Roman numerals indicate how many keys above the root the given chord is. These four chords have been proven to go together very well. Try using a chord map to get you started. Although this might sound too mathematical at the start, the truth is that it'll come without thinking to you once you get the basics of theory down pat. Scales are useful tools in the creation of melody. Although melodies need to be properly felt out in order to be memorable and effective, using a scale will narrow down the notes you're conventionally supposed to use. Make sure the scale you're using is in accordance with the chords and key you've chosen. The standard scale is a C Major scale. This scale is often used for vocal warm-ups before a performance. Some avant-garde composers in the 20th century would open up the piano itself and change the tuning of the strings, but prior to the adoption of equal temperament for keyboard instruments in the 18th century, there were numerous tunings in use. Changing all of the keys even a 16th of a step can result in a strange new experience of the piano. Be advised that messing around with a piano should only be done if you are an expert. Otherwise, you'll probably just end up sabotaging your piano for regular use. Notation is the technical language of music. If you're a serious composer, it's essential that you have at least some knowledge of notation and how to get your ideas down accurately on paper. Although it takes a little bit of time to get used to, there are fortunately lots of free online resources to help get you up to par with your notation reading and writing. If you're completely new to notation, you should try sight-reading a few basic songs on the piano until you're more used to it. There are digital notation programs that may prove easier to work with than pen and paper.

summary: Decide upon a tonality. Explore chord progressions leading from the root chord. Develop melodies from a chosen scale. Experiment with tuning. Record your work via notation.

Summarize the following:
Whether you're shopping for new plugs, you just bought new plugs that you want to check before installing, or you want to check the function of your current set of spark plugs, you need to learn the appropriate gap between the two electrodes on the end of each plug. Each vehicle's measurement will be different, though most are generally somewhere between 0.028-.06 inch. You can either look in your owner's manual or go to the auto parts store and have them look it up for you. Modified engines require smaller gap settings to account for the amount of power you're putting through the engine. General rule of thumb: the more power, the smaller the gap. There are several varieties of tools used to measure the gaps of spark plugs, some of which are more appropriate for more modern plugs, which sometimes feature delicate precious metals. Most measuring tools will also feature a flat edge typically used for bending the bottom electrode on the spark plug to adjust the gap slightly. A coin-style gap measure is usually the cheapest option, and works by running the edge of the "coin" through the gap until you reach a point where it stops. The edge is marked like a ruler, designating the thickness of the edge at that point. This is a good tool for older plugs you want to check the efficacy of, but can also inadvertently widen the gaps as you use it. A wire coin gap works essentially the same way as the regular coin-style gap, but features different wire measures of varying lengths on the edge around the coin. A blade-style feeler gauge is an effective and versatile tool. Built like a pocket-knife, this gauge features different blades of varying widths, some with wire on the end and some without, placed in the gap to check the spacing of the electrodes. You can also use multiple blades to measure larger gaps. These are effective to use while adjusting. . If you've just pulled it out of the box, it should be in pretty good shape, but if you're checking a plug that you've been using in your car it's a good idea to clean it off a little with a clean cloth. Spark plugs can build up some whitish soot on the contact points, so you'll want to make sure they're somewhat clean to get the most accurate reading. You can use a little bit of quick-drying (90%) alcohol on the contact points to clean them off if they're especially dirty. Lots of build-up or any blackening on the contact points might be a sign of a plug that's outlasted its prime, however. If they're especially dirty, you might consider buying new ones. Place the appropriate blade or wire on your gap tool between the electrode tips of the plug, or pass the coin through the electrodes to determine the measurement.
summary: Learn your vehicle's gap specifications. Select an appropriate gap tool. Clean the spark plug Measure the gap by passing the tool through the electrodes.