user: Question: Name the number of master recording for Doobie Brothers The Doobie Brothers
Columns: ['Year', 'Song title', 'Artist', 'Master recording', 'NA/UK/AUS/JPN/NL tier', 'European tier']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1999.0, '" All Star "', 'Smash Mouth', 'Yes', '2. Rooftop', '2. Rooftop']
SQL:

assistant: SELECT COUNT("Master recording") FROM "Table" WHERE "Artist" = 'Doobie Brothers The Doobie Brothers';