Naturally, that depends upon the material.

By default, words and images created by Karlheinz are licensed under a Creative Commons Attribution 3.0 Unported License. This means they may be used in whatever manner you wish, including commercial use, with the only obligation being that you must credit Karlheinz as the originator of the material. (This is the least restrictive license that is universally accepted as legally valid.)

Music, however, is different. If downloads are available on this site, the license will be explicit. For the most part, music downloads are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. This means that you may download it for personal use, and share it freely with others; but you may not use it commercially, and you may only create derivative works released under the same license. (For what constitutes "commercial" and "derivative," see below.)

All other music is fully copyrighted. This is the case, for example, with music that is available on CD or LP but not available on this site to download.

Keep in mind that this only applies to content which is created by Karlheinz. This site also contains material that was created by third parties (e.g. live photos or reviews). Since I do not hold the rights to this material, I cannot grant a license to use it - you must contact the original rights holder. The rights holder should be credited on the page where the material appears. If not, please contact me and I'll rectify the situation.