There are some frequently used ones and a few that are becoming absolutely obsolete over the years. The more you become regular with each clarinet, the more you’ll become conscious about their dissimilar tonal characteristics and functions. Each clarinet is awfully alternative. You can be capable of determine every one by looks in addition to by listening to recordings. If you’re new to the clarinet, it’s recommended that you just start with the very common Bb clarinet. It’s the best one to learn first and it will be the one you use essentially the most by far. After that, which you could assess which other clarinets will fit your individual needs. Tip openings are measured in either hundredths of a millimeter e. g. 1. 47mm or thousandths of an inch e.