Which is better to watch the singer's album, CD, BD or DVD?

Buy a BD if you have money. Now the sound quality of BD is lossless DTS 5. 1 channel, not to mention the picture quality, which is 1080P clarity! Of course it's better than DVD and CD, but let's see if it's genuine!

CD stands for laser disc, which is a common term used in all CD media formats. The general capacity is 700MB. DVD is a kind of optical disk storage, which is usually used for playing movies with standard TV definition, high-quality music and storing data in large capacity. Unlike CDs, DVDs can have multiple layers. DVD-5 refers to a single-sided and single-layer DVD, which is also the most common DVD. Its capacity is about 4.7GB, close to 5GB, so it is called DVD-5. DVD-9 refers to a single-sided and double-layered DVD, which means that a DVD contains two information layers with a total capacity of about 8.5GB. The advantage of DVD-9 is that you can store a 120-minute high-quality movie on a disk without manually changing disks. However, some early DVD players and optical drives did not support DVD-9. DVD- 10 is a kind of double-sided DVD, which is generally called double-sided single layer. To put it more popularly, two DVD-5s are glued together back to back to achieve a maximum capacity of 9.4GB, but the disadvantage of DVD- 10 is that it needs to be replaced manually. At present, no player supports automatic change. DVD- 18 is the abbreviation of double-sided and double-layer optical disc. Just like DVD- 10 is made of two DVDs-5, and DVD- 18 is made of two DVDs-9, with a maximum capacity of about 17GB, which is the largest DVD disc at present and extremely rare in the market. BD is a new optical disc, commonly known as Blu-ray Disc. BD single-layer capacity is 25 or 27GB, and double-layer capacity is 46 or 54GB.