McDonalds is: 1.The short lived band from Ohio consisting of Andy from the Necros. 2. McDonalds was also the name of one of the first British Straight Edge bands (choosing the name to offend Vegetarians/Vegans/Animal Rights people who were coming into the UK scene at the time), they later changed their name to Steadfast. Ian Leck of Voorhees fame was their singer.
There's at least four artists under the name "Otto":
1.The composer, singer and percussionist Otto was born in Pernambuco, Brazil, and he was, among Chico Science, Fred 04 and others, a Manguebeat movement creator, that was a revolution to the Brazilian music. 2. aka DJ Toto from Colombia, who has avery nice release on the net-label Corporate Identity (http://www.corpid-label.de/) 3.A Turkish hardcore band from the Istanbul underground music scene To see the German comedian-act, director (and musician too) Otto Waalkes, click here: http://www.last.fm/music/Otto+Waalkes