| Muscle that's often shown off | 33 |
| Muscle-building Maidenform products? | 36 |
| Muscleman with a 1980s cartoon series | 37 |
| Musclemen that go up and down in London? | 40 |
| Muscles for some fraternity guys? | 33 |
| Muscles seen on beefcake calendars | 34 |
| Muscles that benefit from crunches | 34 |
| Muscles used in rowing, for short | 33 |
| Muscles worked by pull-ups, for short | 37 |
| Muscles worked in lateral raises | 32 |
| Muscovite prince known as "Moneybag" | 46 |
| Muscovite ruler ___ the Great, 1462-1505 | 40 |
| Muse "___ could be glorious" | 38 |
| Muse "___ of the Problematique" | 41 |
| Muse appropriate for this puzzle | 32 |
| Muse featured on Chopin's grave monument | 44 |
| Muse often depicted holding a lyre | 34 |
| Muse often depicted holding a small kithara | 43 |
| Muse often pictured holding a globe | 35 |
| Muse seen in the musical "Xanadu" | 43 |
| Muse song about courtroom break? | 32 |
| Muse whose name means "passionate" | 44 |
| Muse whose name means "to delight well" | 49 |
| Muse with a wreath of myrtle and roses | 38 |
| Muse with Clio, Thalia and Urania | 33 |
| Museo del Canal Interoceanico setting | 37 |
| Museum curator's deg., perhaps | 34 |
| Museum gift shop offering, briefly | 34 |
| Museum guide who's doing OK? | 32 |
| Museum of Anatolian Civilizations setting | 41 |
| Museum of natural history exhibits | 34 |
| Museum that's called a gallery | 34 |
| Museum with an Edward Hopper collection | 39 |
| Museum with many Spanish masterpieces | 37 |
| Mushroom cloud former, for short | 32 |
| Mushroom cloud producer, in brief | 33 |
| Mushroom popular in Asian cuisine | 33 |
| Mushroom that's poisonous with alcohol | 42 |
| Mushroom used in Japanese cooking | 33 |
| Mushroom ___ (atom bomb's wake) | 35 |
| Mushrooms also known as velvet stems | 36 |
| Mushrooms have a weird effect on him | 36 |
| Mushrooms with caps resembling honeycombs | 41 |
| Musial eliminated Wash. Senators | 32 |
| Musial's 6 and Gibson's 45? | 35 |
| Music associated with the '70s | 34 |
| Music backdrop of "The Sound" | 39 |
| Music buff's prized possession | 34 |
| Music by Shamus O'Connor: 1917 | 34 |
| Music co. headquartered in London | 33 |
| Music employing chromatic pitches equally | 41 |
| Music enjoyed by people on MDMA, at times | 41 |
| Music fan's purchase, perhaps | 33 |
| Music featured in "10" | 32 |
| Music featured in "A Clockwork Orange" | 48 |
| Music for it is written largely in alto clef | 44 |
| Music for which Peter Tosh is famous | 36 |
| Music from ''The Sting,'' e.g. | 46 |
| Music from a Christmas perennial | 32 |
| Music game with a floor pad, for short | 38 |
| Music game with a floorpad, for short | 37 |
| Music genre and this puzzle's theme | 39 |
| Music genre derived from punk rock | 34 |
| Music genre of Poison and Guns N' Roses | 43 |
| Music genre of Possessed and Deicide | 36 |
| Music genre of the English Beat and the Specials | 48 |
| Music genre of the Mighty Mighty Bosstones | 42 |
| Music genre suitable for this puzzle's theme | 48 |
| Music genre that evolved in the '50s | 40 |
| Music genre that influenced No Doubt | 36 |
| Music genre that often includes an accordion | 44 |
| Music genre that started in D.C. in the mid-1980s | 49 |
| Music genre whose artists often have pseudonyms | 47 |
| Music genre with a "third wave" | 41 |
| Music Hall of Fame inductee 1987 | 32 |
| Music heard on "The Benny Hill Show" | 46 |
| Music industry name, as frontman for the Raiders | 48 |
| Music licensing fee-collecting org. | 35 |
| Music lover's prized possession | 35 |
| Music mag that went digital-only in 2009 | 40 |
| Music magazine founded by Bob Guccione Jr. | 42 |
| Music magazine whose logo is a 45 rpm adapter | 45 |
| Music maker "played" by the wind | 42 |
| Music maker that doesn't sound true | 39 |
| Music of India, adapted by the Beatles | 38 |
| Music of Oasis and Radiohead, e.g. | 34 |
| Music often pumped into restaurants | 35 |
| Music partner of Carmelo Luggeri | 32 |
| Music pioneered by Byron Lee and the Dragonaires | 48 |
| Music played by Ravi Shankar at Woodstock | 41 |
| Music popular in Nashville, briefly | 35 |
| Music publisher's receipt, often | 36 |
| Music Pulitzer Prize-winner, Kernis | 35 |
| Music purchases stored in wallets | 33 |
| Music purchases that come with download codes | 45 |
| Music source on many an old fairground | 38 |
| Music source that merged with Rhapsody in 2011 | 46 |
| Music star with an accent in her name | 37 |
| Music student's field of study | 34 |
| Music students' performances | 32 |