Adele insists special guests at her concerts donate cash to her favorite cause in return for complimentary tickets.
The Someone Like You singer helps raise funds for Sands, an organization dedicated to supporting parents coping with the death of an infant, by demanding that everyone who scores a free pass to her shows hand over at least $20 to charity.
And she's so particular about her fundraising efforts, Adele has even made it a fixed request on her backstage rider, which has recently been obtained by website TheSmokingGun.com.
The singer also forbids "tomatoes, vinegar, chilli or citrus fruit" on her sandwiches in an effort to make sure her voice is in top form.
The rider also includes one pack of Marlboro Light cigarettes, two bottles of the "very best quality red wine" and a "selection of bottles of the best quality European lager".