How does one go about obtaining legal rights to perform Igor Stravinsky's 'Firebird' suite?

To obtain legal rights to perform Igor Stravinsky's 'Firebird' suite, you must contact the rights holder, which is typically the publisher or the estate managing the composer's works. You can start by identifying the publisher listed in the score or checking with organizations such as ASCAP or BMI. Once you reach out, you will likely need to fill out an application and possibly negotiate licensing fees. It's advisable to allow ample time for this process, as it can take several weeks.