Typically appearing in works that employ a score with non-original elements, these are brief segments of standard songs — such as old songs that don't involve paying royalties — as themes for various types of scenes or activities. Some of these have become standardized, and in some cases they are the only reason that many people know the songs at all. Many of these have become verbal shorthand for particular nationalities or ethnicities, and thus may border on stereotypes.
Vocaloid ( ボーカロイド , Bōkaroido ? ) is a singing voice synthesizer . Its signal processing part was developed through a joint research project led by Kenmochi Hideki at the Pompeu Fabra University in Spain in 2000 and originally was not intended to be a full commercial project. Backed by the Yamaha Corporation , it developed the software into the commercial product "Vocaloid." [ 1 ] [ 2 ] The software enables users to synthesize singing by typing in lyrics and melody . It uses synthesizing technology with specially recorded vocals of voice actors or singers. To create a song, the user must input the melody and lyrics.