With some discussion about Morrissey performing the same songs too often, I had some time on my hands to check the stats. I may be wrong, but I calculate that he's sung 109 different songs since the start of 2018.
Corrections welcome, but that seems fair enough for any performer and much better than many of his contemporaries.
22 - The Smiths (How Soon is Now?, Is It Really So Strange?, William, It was Really Nothing, I Started Something I Couldn’t Finish, That Joke Isn’t Funny Anymore, What She Said, Girl Afraid, I Won’t Share You, Panic, The Queen is Dead, Half a Person, The Boy With a Thorn in His Side, Never Had No One Ever, Shoplifters of the World Unite, This Night Has Opened My Eyes, Please, Please, Please Let Me Get What I Want, Sweet and Tender Hooligan, Girlfriend in a Coma, Frankly Mr Shankly, London, I Know It’s Over, Rubber Ring)
6 - Viva Hate era (Little Man, What Now?, Everyday is Like Sunday, Break Up the Family, Suedehead, Dial a Cliché, Hairdresser on Fire)
6 - Bona Drag Era (The Last of the Famous International Playboys, Disappointed, November Spawned a Monster, Ouija Board, Ouija Board, Yes, I am Blind, At Amber)
3 - Kill Uncle and 1991 era (Our Frank, I’ve Changed My Plea to Guilty, The Loop)
6 - Your Arsenal era (We Hate It When Our Friends Become Successful, Glamorous Glue, You’re the One for Me, Fatty, Seasick, Yet Still Docked, Tomorrow, Jack the Ripper)
7 - Vauxhall and I era (Hold on to Your Friends, Speedway, The More You Ignore Me, The Closer I Get, I Am Hated for Loving, Why Don’t You Find Out for Yourself?, The Lazy Sunbathers, Billy Budd)
2 - 1995 era (Sunny, Have-A-Go Merchant)
3 - Maladjusted era (Satan Rejected My Soul, Alma Matters, Trouble Loves Me)
6 - You are the Quarry era (Let Me Kiss You, Irish Blood, English Heart, First of the Gang to Die, My Life is a Succession of People Saying Goodbye, I’m Not Sorry, Munich Air Disaster 1958)
3 - Ringleader of the Tormentors era (You Have Killed Me, Life is a Pigsty, If You Don’t Like Me, Don’t Look at Me)
5 - Years of Refusal era (Black Cloud, Something is Squeezing My Skull, I’m Throwing My Arms Around Paris, That’s How People Grow Up, All You Need is Me)
4 - World Peace is None of Your Business era (World Peace is None of Your Business, The Bullfighter Dies, Istanbul, Scandinavia)
10 - Low in High School era (My Love, I’d Do Anything For You, I Wish You Lonely, Spent the Day in Bed, The Girl From Tel-Aviv Who Wouldn’t Kneel, Jacky’s Only Happy When She’s Up on the Stage, Israel, I Bury the Living, Home is a Question Mark, When You Open Your Legs, Who Will Protect Us From the Police?)
8 - California Son era and before (Never Again Will I Be a Twin, Back on the Chain Gang, Morning Starship, Lady Willpower, It’s Over, Wedding Bell Blues, Some Say (I Got Devil), Days of Decision)
6 - I Am Not a Dog on a Chain era (Jim Jim Falls, Love is On Its Way Out, Once I Saw the River Clean, Knockabout World, What Kind of People Live in These Houses?, My Hurling Days are Done)
7 - Bonfire of Teenagers era (Rebels Without Applause, Sure Enough, the Telephone Rings, I Am Veronica, Bonfire of Teenagers, Kerouac’s Crack, Saint in a Stained Glass Window, I Live in Oblivion)
2 - Without Music the World Dies (Without Music the World Dies, The Night Pop Dropped)
3 - Other covers (Judy is a Punk, You’ll Be Gone, Alone Again Naturally (partial))
Corrections welcome, but that seems fair enough for any performer and much better than many of his contemporaries.
22 - The Smiths (How Soon is Now?, Is It Really So Strange?, William, It was Really Nothing, I Started Something I Couldn’t Finish, That Joke Isn’t Funny Anymore, What She Said, Girl Afraid, I Won’t Share You, Panic, The Queen is Dead, Half a Person, The Boy With a Thorn in His Side, Never Had No One Ever, Shoplifters of the World Unite, This Night Has Opened My Eyes, Please, Please, Please Let Me Get What I Want, Sweet and Tender Hooligan, Girlfriend in a Coma, Frankly Mr Shankly, London, I Know It’s Over, Rubber Ring)
6 - Viva Hate era (Little Man, What Now?, Everyday is Like Sunday, Break Up the Family, Suedehead, Dial a Cliché, Hairdresser on Fire)
6 - Bona Drag Era (The Last of the Famous International Playboys, Disappointed, November Spawned a Monster, Ouija Board, Ouija Board, Yes, I am Blind, At Amber)
3 - Kill Uncle and 1991 era (Our Frank, I’ve Changed My Plea to Guilty, The Loop)
6 - Your Arsenal era (We Hate It When Our Friends Become Successful, Glamorous Glue, You’re the One for Me, Fatty, Seasick, Yet Still Docked, Tomorrow, Jack the Ripper)
7 - Vauxhall and I era (Hold on to Your Friends, Speedway, The More You Ignore Me, The Closer I Get, I Am Hated for Loving, Why Don’t You Find Out for Yourself?, The Lazy Sunbathers, Billy Budd)
2 - 1995 era (Sunny, Have-A-Go Merchant)
3 - Maladjusted era (Satan Rejected My Soul, Alma Matters, Trouble Loves Me)
6 - You are the Quarry era (Let Me Kiss You, Irish Blood, English Heart, First of the Gang to Die, My Life is a Succession of People Saying Goodbye, I’m Not Sorry, Munich Air Disaster 1958)
3 - Ringleader of the Tormentors era (You Have Killed Me, Life is a Pigsty, If You Don’t Like Me, Don’t Look at Me)
5 - Years of Refusal era (Black Cloud, Something is Squeezing My Skull, I’m Throwing My Arms Around Paris, That’s How People Grow Up, All You Need is Me)
4 - World Peace is None of Your Business era (World Peace is None of Your Business, The Bullfighter Dies, Istanbul, Scandinavia)
10 - Low in High School era (My Love, I’d Do Anything For You, I Wish You Lonely, Spent the Day in Bed, The Girl From Tel-Aviv Who Wouldn’t Kneel, Jacky’s Only Happy When She’s Up on the Stage, Israel, I Bury the Living, Home is a Question Mark, When You Open Your Legs, Who Will Protect Us From the Police?)
8 - California Son era and before (Never Again Will I Be a Twin, Back on the Chain Gang, Morning Starship, Lady Willpower, It’s Over, Wedding Bell Blues, Some Say (I Got Devil), Days of Decision)
6 - I Am Not a Dog on a Chain era (Jim Jim Falls, Love is On Its Way Out, Once I Saw the River Clean, Knockabout World, What Kind of People Live in These Houses?, My Hurling Days are Done)
7 - Bonfire of Teenagers era (Rebels Without Applause, Sure Enough, the Telephone Rings, I Am Veronica, Bonfire of Teenagers, Kerouac’s Crack, Saint in a Stained Glass Window, I Live in Oblivion)
2 - Without Music the World Dies (Without Music the World Dies, The Night Pop Dropped)
3 - Other covers (Judy is a Punk, You’ll Be Gone, Alone Again Naturally (partial))